323:, flashing yellow does not require traffic to stop, but drivers should exercise caution since opposing traffic may enter the intersection after stopping. This may be used when there is a malfunction with the signals, or late at night when there is little traffic. A single four-way flashing light showing only one color in each direction may be used at intersections where full three-color operation is not needed, but stop or yield signs alone have not had acceptable safety performance. Yellow lights are displayed to the main road, to highlight the intersection and inform drivers of the need for caution. Red lights supplement stop signs on the side road approaches. All-way red flashing lights can supplement all-way stop control, but all-way yellow signals are prohibited by US regulations. In Canada a flashing yellow light at an intersection that would otherwise have traffic signals indicates that the traffic signals are malfunctioning. In this case the flashing yellow is seen by all vehicles approaching the intersection, and indicates that all vehicles must treat the intersection as a four way stop. All vehicles must come to a complete stop and yield right of way as per four way stop procedure. This would continue until the traffic signals have been fixed.
1191:, red and yellow lights are displayed together for one, two, or three seconds at the end of the red cycle to indicate that the light is about to change to green. This phase aids the drivers of vehicles to turn on the engines again (there are requests/advice to turn off engine in front of red traffic lights in some countries, e.g. Switzerland), or drivers with manual gearboxes, giving them time to change into first gear during the short phase, as well as drivers of vehicles that may have been yellow-trapped whilst turning right (or left in LHT countries) a chance to clear the intersection in more safety. It also informs drivers who may be approaching the intersection at speed that a green light is imminent, so they may proceed through the junction without having to stop (or, with enough of a lead distance, even having to slow), reducing the potential annoyance (and safety risk) of braking sharply to a halt only to have the green light appear immediately after.
713:, Australia, some intersections of this type employ a turn arrow without the red arrow. This would turn green with the main signal, before turning yellow, then off, giving priority to oncoming traffic. The nationwide standard seems to now include a red arrow that turns off. This arrow turns red simultaneously with the main light. After the cross traffic has had its turn, the arrows on opposite sides would both turn green, until one side runs out of right-turn traffic. In any case, when both sides of the intersection turn green, the corresponding arrow will turn off after a short delay, thus working similarly to the old Victorian standard. This method has the advantage of being controlled during peak-hours, where controllers would be able to prevent the arrow from turning off in extreme peak-hour traffic, but causes confusion as drivers expect a light to be on when three are present.
1412:, the use of a double red light is different. It is typically used on left turn signals. For horizontally mounted signals, typically hung or mounted over the lanes, it is configured with two red balls or arrows, one yellow arrow or ball, and a green arrow (from left to right). For vertically mounted signals, the two red balls or arrows are on the top, then a yellow arrow or ball, and a green arrow. It is usually accompanied by signs saying "left turn signal" or "left on arrow only". Signals for traffic going straight use standard signals, usually mounted horizontally over the road. The use of two red lights on the left turn signal allows for redundancy in case one of the red lights burns out, while saving money by requiring only one signal for left turns per direction that needs one. It also prevents the
825:
509:
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is a long enough break in oncoming traffic. The flashing red usually occurs when the oncoming traffic has a green signal. This function is not enabled at intersections where it may not be safe to do so (restricted view of oncoming traffic, heavy pedestrian crossings, or double-lane left turns are good examples). Michigan usually indicates signals that are dedicated to turning traffic with a sign displaying "LEFT" or "RIGHT". This sign is normally illuminated at night. More recent installations in
Michigan, however, have used flashing yellow arrow signal heads, which typically have not included left-turn signal signage. All flashing red ball signals in Michigan will gradually be phased out in favor of the flashing yellow arrow. The flashing red ball was also used in
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goes straight ahead and there is no permissive right turn allowed (for right turns). As soon as the pedestrian signal changes to flashing red, the red arrow extinguishes. Traffic turning may now proceed provided they give way to oncoming traffic (for right turns) or pedestrians (for left turns). This method is becoming common in many states of
Australia. When an intersection is given a protected turn prior to the pedestrian crossing on the side road given the green signal, the lights change to yellow and red, and then the red arrow disappears as soon as the pedestrian crossing is given a flashing red signal.
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before the first traffic signal after a long stretch of road with no signals. This is installed so that drivers can view it from a distance. This light begins blinking with enough time for the driver to see it and slow down before the intersection light turns yellow, then red. The flashing yellow light can go out immediately when the light turns green, or it may continue for several seconds after the intersection light has turned green, as it usually takes a line of cars some time to accelerate to cruising speed from a red light. These are relatively common in areas such as the United States, Canada,
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Research
Program in the US found that it improves safety compared with a standard circular green signal. The flashing yellow arrow has an important safety advantage because it can be shown while the through signals on the same approach are red. The flashing yellow arrow is also meant to prevent yellow trap. Though Dallas Phasing resolved the yellow trap issue, flashing yellow arrow has been deemed less confusing than a louvered green ball, and problems might arise if the left turn signal comes out of adjustment and its indications are visible to through traffic.
428:
lights are only installed facing the major road approaches, and if there is a minor road it is controlled by stop signs. The signal will flash green until a pedestrian or cyclist is detected. The green light typically changes to a solid green indication for a few seconds before changing to yellow and then red but the solid green phase may be omitted depending on the road authority that installed the traffic light. The intention of the flashing green is to let drivers know that the signal will only change to yellow for pedestrians but otherwise "rests" in green.
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585:
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all-directions signal; the same with a separate green left or right "filter" arrow which lights up either independently of the main green (permitting a turn in that direction at an otherwise red light) or along with it (showing that conflicting traffic has been stopped so turning traffic does not need to yield (known as "give way" in the UK)); or using adjacent sets where the horizontal positioning and lane layout (particularly where lanes are segregated by kerbs or islands) denotes which directions are stopped or free to move.
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not expect a signal (such as a newly erected signal or one put up for construction); in other situations where extra work may be needed to draw attention to the status of the light (such as in an area where many other red lights approximate the brightness, placement and color of a red traffic signal); or the strobe may also be a flash from a camera located within the traffic signal itself (there has been much dispute as to whether this is legal or not). These are also used in areas prone to
295:, paired red/red traffic lights are often installed outside fire and ambulance stations on major roads, which, when activated by the station, flash alternately (so that at any time one red light is always showing), the purpose being to cause traffic to stop for a set amount of time to allow emergency vehicles to exit their station safely. The UK also uses an amber light which precedes the flashing red lights, and these signals are also used at level crossings, airfields and lifting bridges.
528:, a signal may display a green straight arrow alone, usually for 5 to 9 seconds, and then the full green (or right turn arrow) illuminates. This allows pedestrians to emerge into the roadway, and therefore (in theory) increases safety. At a few intersections green arrows appear with the red ball to allow traffic to travel in a particular direction, but the red ball is always illuminated. Examples of where this occurs include the intersection of Delaware Avenue at Harrison Street in
1200:
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873:, traffic signals may also have an extra white rectangular light mounted above the red light. This phase indicates that a public transit vehicle - bus, streetcar, or LRT - may proceed through an intersection in any direction while all other traffic faces a red light. In Ontario, this light is identical to the vertical "go" transit signal used in Western Europe. The horizontal "Stop" European transit signal is not used in Ontario.
775:, a flashing green light is used in crosswalks to indicate that signal is going to change from green to red soon. Therefore, flashing green has roughly the same meaning to pedestrians as ordinary yellow signal has for motorists. Slow-moving pedestrians are warned about oncoming signal change and have opportunity to wait for next signal cycle. Motorists are more likely to notice flashing signal. Drivers of vehicles about to cross
83:
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small hole in the red signal visor to allow police to see the status of the signal from a wide angle (but not directly opposite the signal). In France and, perhaps, Vietnam (which was previously a French colony by the name of
Indochina), the back of the red lights are sometimes designed with a red cross to indicate that the light is red, so that opposing left-turning drivers know that oncoming traffic has been stopped.
261:
1552:(although by Chinese traffic laws, people who are color blind are not permitted to drive). It does, however, conserve space. The other disadvantage of it is it does not have indication of when a turn can be made without yielding and when the turn can made only after yielding to the oncoming traffic. Although by Chinese traffic laws, turning is always supposed to be made after yielding to oncoming traffic.
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380:
567:, a green arrow with the circular green is never shown. Instead, green arrows must be shown with the circular red. This means a signal may display green arrows pointing in all possible directions with the circular red. Another unusual sequence is that the circular red changes to circular yellow whenever some or all of the arrows end, and then changes back to red after the clearance period.
1274:, as the strobing white light may be visible from a distance while the standard red light is not. A newer variant uses a flashing white LED ring located on the outer edge of the red indication as opposed to in the center of the red. Typically one strobe-equipped signal is mounted as a supplement between two normal signal heads. However such strobe installations have been prohibited by the
487:, left-turn signals are designated by a two-bulb light configuration with one (or two) red balls and one LED bimodal arrow. When a left-turn cycle begins the red ball will change to a flashing green arrow to permitted all traffic turning left. When the left-turn cycle ends the flashing green arrow will turn to a solid amber arrow for five to three seconds then change back to a red ball.
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vehicles to turn left, the middle light allows transit vehicles to proceed straight, and the right light allows transit vehicles to turn right. Multiple lights may be displayed at the same time, to allow transit vehicles to proceed in multiple directions at the same time. Transit signals are mostly used to give trams priority, but sometimes are used for buses and trolleybuses too.
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680:, used a flashing yellow ball in the left-turn signal for the same purpose. Seattle also used a four-lamp signal at about 20 locations, with a red ball, a steady yellow ball, a flashing yellow ball, and a dual-mode yellow and green arrow; during the permissive turn, the flashing yellow ball was displayed. These were later replaced by flashing yellow arrows.
543:, Canada, it is forbidden to turn right while a red signal is present. At many intersections, lights will change from red to a green arrow permitting drivers to proceed straight through the intersection. After approximately five seconds, the green arrow is replaced with a green ball signal allowing drivers to proceed forward or turn as they wish.
555:, Australia and the UK, a right arrow may sometimes be displayed alongside a green light to indicate that oncoming traffic has been stopped and that it is safe to turn right, however this does not necessarily mean that the turn is fully protected and road users should always check that there is no oncoming or approaching traffic before turning.
1462:, Canada, to indicate a protected-prohibited left turn signal. A sign with the universal no left turn symbol and a depiction of the double red light is mounted near the signal to indicate that no left turns are permitted on a double-red light. Intersections with this configuration are quite common in
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to give priority to emergency vehicles. These preemption applications often include an illuminated "notifier" signal. A notifier is a secondary lighting device usually mounted independently of the traffic signal, such as a standard or strobing light bulb in an omni-directional enclosure or spotlights
892:
In
Australia and New Zealand, buses and trams may have a white "B" and "T" light respectively to indicate they may proceed through the intersection in any direction. A white arrow indicates that they only may proceed in the arrow's direction, common for trams to indicate that they may proceed and the
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may have its own traffic signals, indicating that it is okay for it to cross an intersection. These signals are all white, and the top section (stop) is a horizontal bar, the middle (caution) is an upright triangle, and the bottom (go) is a vertical bar. The horizontal bar is generally considered the
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uses a three-lamp traffic signal, with a red ball, yellow arrow, and green arrow; during the permissive turn, the red ball flashes. A flashing red ball signal on a "protected" left turn traffic signal indicates that left turning traffic may, after a full stop, complete their turn if and only if there
418:
In Canada, there is disagreement between the provinces over the meaning of flashing green ball signals. Across most of Canada (Ontario, Quebec, New
Brunswick, Nova Scotia, the Northwest Territories and Nunavut), flashing green means an Advanced Green. This means traffic can turn left (across oncoming
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according to current traffic conditions. They are intended to reduce congestion on the freeway in two ways. One is to ensure that the total flow entering the freeway does not exceed the capacity at a downstream bottleneck. A second is to break up platoons of vehicles entering freeways, ensuring that
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superimposed on the center of the red light, which are activated when the red light itself is illuminated. These are common on highways with few traffic signals, in high-traffic, and/or high-speed areas (where drivers running red lights are a major problem), in a place where a regular traveler would
1248:
A common way of warning that an obscured traffic light ahead is red is a red-signal-ahead sign. It is shaped like a standard yellow diamond shape sign with LEDs spelling out "Signal Ahead". Just before the traffic light goes yellow, the word "Red" will light up above Signal Ahead and they will begin
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Some jurisdictions use special small blue lights on the reverse of signal heads to indicate a red light lit on that head. They are used to communicate the presence of a red signal to police so they can view the situation without having to traverse the intersection. Other jurisdictions simply drill a
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or intersection, at which pedestrians have the ability to stop traffic to allow a safe crossing. They may also be used at a drawbridge. The flashing green indicates that the signal is not currently in use. After the pedestrian pushes the button to trigger the signal, the light becomes a steady green
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Dallas phasing gives traffic engineers more flexibility with the leading and lagging protected left turn phase configurations allowing for better coordination between signals. There are also yellow and green arrows on Dallas phasing signals, permitting exclusive protected left-turn phases as well as
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uses a similar arrangement: it uses a doghouse signal with green and bimodal (steady and flashing) yellow arrows on the left and green and yellow balls on the right, topped by a red ball, During the permissive turn, the flashing yellow arrow is displayed; but it cannot prevent yellow trap because it
1652:
Traffic lights are sometimes accompanied by timers that indicate how much longer a certain phase will last. This is especially common for pedestrian crossing lights in high-traffic areas. Although prohibited for vehicular traffic in most countries around the world, timers have been extensively used
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In the UK, at
Aylesford near Maidstone, a set of middle section lights exist for traffic entering from their home driveways, as these are located on the narrow road between the traffic lights. Each light has a no left turn and a no right turn sign, which light up to indicate to drivers where not to
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Another system, which is also common in the other cities in China, is where there is a set of three lights as traffic lights. Every light is an arrow pointing in a different direction and every arrow has a colour of its own, to show whether traffic flow is permitted or prohibited in that direction.
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In this configuration, the left-turn signal will display circular green from the leading protected left turn phase until the lagging permissive left turn phase, but the green arrow with or without the green ball will only be displayed during the leading protected left-turn phase. During the lagging
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In the UK, a filter arrow is a green arrow which indicates to traffic that their movement does not conflict with any other movement and therefore they may proceed through the junction without stopping. It illuminates while the main signal is still at red. It is normally fixed to the left side of or
499:
In New
Zealand, where they drive on the left, when a road is given a green light from an all direction stop, a red arrow can continue to display to turning traffic, holding traffic back while the pedestrian crossing on the side road is given a green signal (for left turns) or while oncoming traffic
352:
In the US, a flashing yellow arrow is a signal phasing configuration for permissive left turns. An additional aspect displaying a yellow arrow is inserted between the yellow left turn arrow and the green left turn arrow. When the phase is active, the yellow arrow will flash. Drivers turning left or
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bar) of the green bar is "eaten up", with the remaining third intact. A full, uninterrupted yellow bar will appear for a few seconds before, after a short blink, lights turn red. Immediately after the full red bar appears, a tiny (almost unnoticeable) split/division appears to signify the bit that
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The double-red light also appears in
Georgia, South Carolina and North Carolina in left-hand turn lanes. It serves the same purpose as the vertical Texan configuration, and mainly appears on boulevards with multiple lanes of traffic where a left turn is dangerous due to poor visibility. Double red
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In some areas, a "prepare to stop" sign with two alternately flashing yellow lights is installed in locations where a high-speed road (design speed usually at least 55 mph / 90 km/h) leads up to a traffic light, where the traffic light is obscured from a distance (or both conditions), or
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In the UK, although priority signals are not used, one such installation exists near
Maidstone; a blue bus priority light which is located approximately 150 yards from the main traffic lights. When the sensor detects a bus, the blue light comes on for 3 seconds to let the bus driver know that it's
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In the UK and many European countries, a green arrow may replace the full green light to indicate the direction in which movement is permitted for traffic in that lane. They may also have an additional green arrow below or on the left or the right of the other green arrow to permit drivers in that
427:
British Columbia has adopted a non-standard meaning for a flashing green light, using it to indicate that the signal is controlled by pedestrians (and occasionally bikes). These signals are placed either at intersections or mid-block to allow pedestrians and cyclists to cross a major road. Traffic
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or Pedex Crossings, as the flashing phase on pelican crossings has been deemed to be confusing to pedestrians and drivers alike. Also in the UK, twin flashing amber lights are used at cattle crossings and army tank crossings to warn drivers that they should give way at the crossing when the lights
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be "eaten up". This corresponds to the usual position of a red light (leftmost, or rightmost if at the other end of the road and at the other side of the pavement; or the upper third). When two-thirds of the red bit is "eaten up", the red light extinguishes, only to be replaced nearly immediately
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illuminate the yellow light a few seconds before the green light turns off, to give this same warning, as did some lights in the Los Angeles area until at least the late 1970s, and one light in Glendale, AZ at 56th Avenue &Glenn until it was replaced in the early 1980s. Traffic lights in East
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In many parts of Western Europe transit signals (for trams, and in some cases buses as well) employ traffic signals that are phased similarly to main traffic signals but replace the green light with a vertical white bar, the red light with a horizontal white bar and the yellow with a white dot or
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Current users of flashing green signal are Austria, Belgium, Estonia, Finland, Great Britain, Hungary, Netherlands, Norway, Mexico, Poland, Russia, Spain and Sweden. France, Portugal and Switzerland make limited use of flashing green. In the UK and Ireland, the flashing pedestrian green signal is
632:
Arlington County, Virginia used the classic five-light "doghouse" (1971) with steady green and yellow arrows on the left, and green and yellow balls on the right, topped by a red ball. The light sequence started with a green arrow, proceeding to a yellow arrow, then a green ball, yellow ball, and
600:, the five-light left turn signal head is used in a different manner than standard signals of this type. The left turn signal head operates independently from the signals for straight through traffic. This allows permissive turning even when straight through traffic is shown a red light, avoiding
408:
If one lane is shared by left turning and straight ahead traffic, the left turn movement (protected or permissive) and the straight ahead movement must begin together and must end together at the same time in the signal cycle. In this case, a green left turn arrow may not be shown with a circular
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mile (800 metres). To accomplish this, an overhead red/green traffic light is visible above each lane, several hundred feet beyond the toll plaza. Green is illuminated for two seconds, signalling the first driver in that lane to begin acceleration. Then the signal jumps to red for eight seconds.
726:
In Australia, New Zealand, some SADC countries (such as South Africa), Canada and most of the US, a flashing red or orange pedestrian signal is used at between green and steady red; it means "complete crossing but do not start to cross". This has a similar meaning to European flashing green, but
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The major disadvantage of this system of traffic light is that it is unfamiliar to those who are used to seeing specific colours of the traffic lights at the various ends of a normal traffic light itself (e.g. green rightmost, red leftmost, etc.) as well is being problematic for the color blind
1419:
One type of installation in Texas uses a double red light instead of a single red light to make the red light more pronounced and visible from a distance. In this installation, it is the first traffic light on a rural highway for miles, and traffic approaches at highway speed (65 mph). The
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combination with other arrows or a green ball indication on the same signal such as with the Dallas Phasing configuration described below. Modern signal standards require that a yellow "clearance" interval be displayed for not less than three seconds prior to the protected turn interval ending.
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Elsewhere in China, a blinking green light means "reduce speed now", attempting to stop cars from passing (if that car can still safely stop in time) and is nearly universal in appearance. Some cities or parts of cities show the number of seconds remaining in a specific traffic light colour (a
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In Tianjin, one system is where there is a horizontal bar in a specific colour, with the colour changing and the bar shrinking. The shrinking bar indicates the time remaining in that colour. The colour itself is either red (stop), yellow or green (go). A blinking green one-third-full bar means
460:
Throughout most of the United States a protected turn (a turn that can be made without conflicting traffic) is indicated by a steady 12-inch-diameter (300 mm) green arrow pointing in the direction of the turn. This indication may be displayed in a separate traffic signal head or may be in
393:
The benefit of its introduction is that traffic engineers have a wider range of options to handle variable traffic volumes. According to the Minnesota Department for Transport, the flashing yellow arrow reduces delays and enhances safety. A research report from the National Cooperative Highway
918:
In Russia, transit signals consist of 4 white lights, forming a "T". The bottom light is always illuminated when transit vehicles have permission to proceed. The top 3 lights represent the direction in which transit vehicles are permitted to proceed. For example, the left light allows transit
683:
The Delaware method of using flashing red arrows has been published in the 2009 MUTCD as an alternative to the flashing yellow arrow. However, this was allowed only when an engineering study determined that a "stop condition" must be imposed during the permissive left turn movement. While the
1038:
In the United States, the 2009 Manual of Uniform Traffic Control Devices prohibits any display that gives warning of an upcoming signal change, unless that display is placed well upstream of the signal (See "Warnings of traffic light ahead" below), so traffic at the stop line can not see it.
575:
In the UK, there are no red or yellow "arrow" lights, however there had been trials with the amber arrow in an attempt to prevent drivers from misinterpreting the signals. Also, left or right turns on a red light are never permitted. Layouts are typically simple: either the usual three-disc
1030:, the green lights will start flashing at the end of the Go or Turn phase to indicate that the yellow (Caution phase) lights are about to be engaged. This is useful in fast-paced roads to allow for longer slowing down time, and for pedestrians crossing broad streets. Some traffic lights in
1689:, they are rarely used for pedestrians. A major disadvantage of this is that timers can only be used when the traffic lights are under fixed-time operation, reducing flexibility. This is because it is otherwise impossible to know for exactly how long the light will be green or red.
705:. This intersection uses the Protected/Permissive right turn explained here. If right-turn traffic on the opposite side runs out, then the main light on the facing side will turn green with the shown arrow (in the distance) remaining green until it runs out of right-turn traffic.
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The 2009 Manual of Uniform Traffic Control Devices prohibits this display for new installations in favor of the flashing-yellow-arrow left-turn signal, which accommodates both permissive and protected left turns. Older installations are allowed to stay until they are replaced.
364:
uses a doghouse signal, with bimodal arrow (green and flashing yellow arrow) and a yellow arrow on the left and green and yellow balls on the right, topped by a red ball. During the permissive turn, the green ball and flashing yellow arrow are displayed. This can also prevent
330:
to indicate that drivers should give way to pedestrians if they are still on the crossing, which replaces the normal red and amber phase used at other traffic signals. However in recent years in the UK, most pelican crossings are gradually being phased out in favour of
663:, also used a four-lamp signal, with a steady red arrow, a flashing red arrow, a steady yellow arrow, and a steady green arrow; during the permissive turn, the flashing red arrow was displayed. These flashing red arrows were later replaced with flashing yellow arrows.
1389:, most horizontal traffic lights have a red signal on both sides of the fixture (left and right). They are also now replacing the shaped traffic lights for color-blind people with regular round signals. These are also seen on horizontal traffic lights in Eastern
1211:, Italy and Sweden used to show a green and yellow light together, to indicate that the light was about to change to red. All countries now officially use a single yellow light instead, as displaying both the yellow and the green lights is in the violation of the
1282:(2009 edition) contains an explicit prohibition against their use; therefore, it is still FHWA's position that strobe lights are not allowed in traffic signals and no further experimentation with these types of strobe lights in traffic signals will be approved.
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in the direction of the arrow, although this is no longer the case. Additionally, an advanced green could be more easily added to existing three-lamp signals than could a green arrow, since it didn't require physically installing a fourth lamp for the arrow.
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In Orlando, Florida, there are transit (Bus) signals in the downtown area. These signals are all white, and the top section (stop) is a horizontal bar, the middle (caution) uses a right slanted bar instead of a triangle, the bottom (go) is the vertical bar.
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permissive left-turn phase, it is assumed that opposing traffic has both a permissive left turn phase and a straight-through green light. This can also be used in the opposite configuration, with leading permissive and lagging protected left-turn phases.
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means that if a pedestrian glances at it, they will not enter an intersection without enough time to leave. In the US and in parts of Canada, Australia and New Zealand (e.g., Auckland CBD) pedestrian signals which count down the number of seconds (see
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includes this meaning of the flashing yellow arrow, but though in 2008 the state had planned to require all new signals to have flashing yellow arrows, the 2011 Maryland MUTCD prohibits the flashing yellow arrow in favor of a flashing red arrow.
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now have countdown timers in the flashing hand symbol/"Don't Walk" phase. All new installations of pedestrian signals in the US must include a countdown timer, unless the countdown timer is less than seven seconds long, per the 2009 MUTCD. In
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explicitly prohibits flashing any red arrow indication. As stated in the Vienna Convention, flashing red lights "are only used at level crossing, swing bridge, airport, fire station or ferry terminal" and flashing red arrows are not allowed.
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finishing with a red ball. The signal was accompanied by a sign stating that left turns (against oncoming traffic) were required to yield on a green ball. These were later replaced by four-light signals that included a flashing yellow arrow.
1501:, developed by the German Heuer-Hammer company were used in the Netherlands, Austria (Vienna) and Germany from the 1930s until the 1960s, with the last of them being replaced with the by then common known traffic lights in 1972.
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used a four-lamp signal. Forming a T, it has a flashing red arrow on the left, a steady red arrow on the right and yellow and green arrow on the bottom; during the permissive turn, the flashing red arrow is displayed.
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In the United States, the flashing yellow arrow is not allowed where left turns and other traffic share the same lane. The circular green is still allowed as a permissive left turn display, but has new restrictions:
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traffic) without needing to yield. The advanced green was originally chosen to be represented by flashing green because at the time of its introduction, in Ontario, a green arrow had meant that all traffic
1701:, however, this is not the case, as only streets that are wide enough will get countdown timers, regardless of the length of the countdown. Countdown pedestrian signals are also used in a few places in
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aimed at oncoming traffic lanes. The colors of these secondary lighting devices vary regionally depending upon the operational policies of the local traffic management and emergency service agencies.
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have also been known to place flashing red arrows at certain intersections, especially when no signal is needed for cross traffic. The driver is required to come to a complete stop before turning.
604:. Louvers are fitted over the green and yellow balls of the left turn signal head to prevent driver confusion. The left turn signal head is also accompanied by a sign indicating its special use.
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vehicles only. All signals use white lighting and special symbols ("S", "–" and an arrow) to distinguish them from regular signals. The small light at the top tells the driver when the vehicle's
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are set for proceeding that direction. Transit signals may be accompanied by red and yellow B/T signals indicating to buses and trams stop and caution respectively. Along the northern half of
348:
Variations on the protected/permissive traffic signals in the United States; (1) is the "classic" doghouse five-light signal introduced in 1971; (2) and (3) incorporate flashing yellow arrows
536:. This is also true in Chicago; the straight off straight on ramps from Lake Shore Drive to N Fullerton Ave display a red light and left turn arrow or a red light, never just a green arrow.
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480:, green turn arrows may or may not flash; both cases indicate a protected turn phase, but a flashing green arrow indicates that the protected phase will be followed by a permissive phase.
247:. This may be in the standard traffic light sequence (such as the inclusion of a red-amber phase) or by the use of special signals (such as flashing amber or public transport signals).
1728:) there are signs displaying how fast one has to drive in order to reach the next intersection at the exact time when the light turns green, thus allowing the driver to ease into a
55:
1481:, the double red light is treated as a standard red signal; the double light is used to increase the signal's visibility, as well as providing a redundant light in case one fails.
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An example of this was located at the end of the Massachusetts I-90 Exit 51 in Chicopee, where the ramp ends at I-291. It has since been replaced with a completely modern design.
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double red light makes the red phase of the light visible at a greater distance than the yellow and green on the same signal. This installation is also used on rural highways in
1297:, including the European Annex, contains an explicit prohibition against their use, and any installation of strobe lights in traffic signals is in the breach of the convention.
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A number of countries installed strobe lights on traffic signals until the 1990s. Such installations have since then been prohibited by both the FHWA and the Vienna Convention.
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385:
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detected the bus, and the traffic lights on that road immediately change to green to allow the bus through. No other installations are currently known to exist.
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105:
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signal) as in a conventional set of traffic lights, then returns to flashing green until another crossing is requested. This indication is also used in
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2722:
447:. In Austria, Croatia and Estonia a flashing green light gives advance notice of a change to amber. However, this breaches the Vienna Convention.
2313:
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below) until cross traffic has the right of way are becoming popular at heavily used pedestrian crossings such as in urban shopping districts.
1629:, red/green traffic lights, similar to ramp meters, are used to stagger traffic leading onto the bridge. At the Bay Bridge, about 25 lanes of
1626:
1570:. The European Annex also even contains an explicit ban on it; so installation of multi-coloured aspects as traffic signals is prohibited.
915:
diamond. This is intended to avoid confusion between transit signals and main traffic signals at intersections where both sets are visible.
832:
In the UK, signs can be affixed to a signal head to emphasise a regulatory traffic sign. The most common use for these is prohibited turns.
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1805:
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1245:, New Zealand and Liberia. Japan uses a variant signal with two lamps, a green one and a flashing yellow one, for the same purpose.
207:
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69:
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The US 2009 MUTCD specifically prohibits flashing any green signal indication. Protected flashing green is now used in parts of
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2015:
30:
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3498:
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that would occur at night if a single red signal burned out, and left-turning vehicles obeyed the circular signals instead.
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Germany also used to turn on the amber light together with the green light to signify that the green phase is about to end.
17:
1579:
turn so they don't turn into oncoming traffic. When no traffic on the road is coming, both no turn lights would light up.
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generally use horizontal traffic lights with red to the left and green to the right. Such traffic lights are also found in
3341:
3276:
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783:
used at Pelican Crossings to indicate that pedestrians should not start to cross if they are not already on the crossing.
1366:. These signals also use specific shapes for each color, which aids color-blind people in distinguishing signal aspects:
464:
Throughout Canada, as in the United States, a green arrow indicates protected movement in the direction of the arrow. In
2101:
369:, which occurs when the circular signal turns yellow, and then red, while oncoming traffic still has a circular green.
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When lights of this system turn from green to red, the diminishing green bar will flash once two-thirds (note: not the
2715:
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2020:
597:
171:
109:
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Using this method, there are always five lanes with a "green" signal, staggered throughout the 25 lanes of traffic.
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Delaware method of flashing red arrows are allowed in the MUTCD as alternative to the flashing yellow arrow, the
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for emergency vehicles. This does not conform to MUTCD. Flashing any green signal indication is also against the
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1857:(Report). Rev. 3. United States Department of Transportation, Federal Highway Administration. July 2022
1772:(Report). Rev. 3. United States Department of Transportation, Federal Highway Administration. July 2022
673:
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red, and a red left turn arrow may not be shown with a circular green or a straight ahead green arrow.
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889:"red" phase and symbolizes traffic flowing across the intersection from the perspective of the tram.
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As in the US, strobe lights are not allowed in traffic signals in European and Asian countries. The
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2553:"Driver's guide to operation, safety and licensing : Cars and light trucks - Open Government"
2257:
2159:"Traffic light signals - Light signals controlling traffic - The Highway Code - Guidance - GOV.UK"
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with a full chunk of green (again with the minute division). The process then repeats itself.
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533:
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This means that a motorist may only proceed in the direction of the arrow. In the Province of
2605:
1850:
1765:
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or a two-phase (red and green, no yellow) light, that regulates the flow of traffic entering
1474:. According to Transportation Alberta, there is no legal significance to a double red light.
353:
making a U-turn must be cautious and yield to both oncoming vehicles and pedestrians. The US
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1310:
898:
881:
858:
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327:
228:
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This position was formalized on July 2, 2003 with an Official Interpretation of the MUTCD,
2277:
1985:
McCaffrey, Gordon (September 1964). "Electronic Genie Speeds Traffic Through 1001 Lights".
1854:
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Reproduction of a "Heuer-Ampel" in Bochum at the BongardstraĂźe-KortumstraĂźe intersection
3631:
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You must yield to pedestrians if your traffic signal is red or if it is red and yellow.
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372:
292:
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until the sequence of yellow, then red (at which time the pedestrian crossing gives a
220:
3753:
3621:
3596:
3566:
3525:
1876:
1741:
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1598:
1518:"reduce speed now", and a blinking yellow full-bar indicates "proceed with caution".
1351:
805:
760:
307:
A pole-mounted four-light signal with flashing yellow arrow for a left turn in Oregon
269:
242:
2025:
1424:, always in a vertical configuration, and in either configuration in some cities of
816:. This practice is obsolescent but it remains in the Massachusetts driver's manual.
405:
Any yellow trap caused by a circular green must be eliminated or warned with a sign.
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2731:
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A bicycle signal indicating that cyclists can only proceed in the ahead direction.
29:"Ball signal" redirects here. For the 19th century mechanical railway signal, see
2330:
1791:
402:
It may not be placed over or in front of the left turn lane in new installations.
2785:
2552:
1948:"Why B.C.'s flashing green lights don't mean the same thing as those in Ontario"
1674:
1429:
1413:
1394:
1359:
1319:
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862:
611:
601:
379:
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284:
232:
2692:
Evaluation of Traffic Signal Displays for Protected/Permitted Left-Turn Control
1498:
812:. This replaces the conventional pedestrian signal, but is in violation of the
2833:
1729:
1630:
1615:
1594:
1588:
1421:
1047:
991:
432:
2113:
808:, simultaneous red and yellow lights in all directions allow a pedestrian to
3586:
2823:
2770:
2755:
2656:"You have six seconds to cross: digital countdown installed for pedestrians"
1792:
Manual for Uniform Traffic Control Devices - Part 4: Highway Traffic Signals
1662:
1619:
1463:
1443:
arrows are used for left turn installations on some county-managed roads in
1164:
1156:
1140:
987:
908:
316:
288:
277:
1721:
303:
3581:
1678:
1670:
1602:
1471:
1278:
since 1990; but individual states have been slow to conform. The current
1265:
In some parts of the US, a few traffic lights have slowly flashing white
1180:
1176:
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1120:
1064:
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866:
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477:
2541:
Frequently Asked Questions - Part 4 Highway Traffic Signals, Question 21
1606:
traffic can merge more easily. Some metered ramps have bypass lanes for
1717:
1686:
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1467:
1459:
1405:
1390:
1363:
1335:
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979:
975:
963:
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677:
513:
469:
436:
3651:
1899:"Flashing Yellow Arrow Traffic Signals - Traffic Engineering - MnDOT"
1725:
1702:
1654:
1478:
1425:
1409:
1386:
1347:
1339:
1208:
1128:
1116:
1112:
1027:
1023:
1015:
1007:
999:
995:
983:
854:
846:
772:
768:
525:
312:
273:
224:
174:. Statements consisting only of original research should be removed.
1877:"Maryland Manual on Uniform Traffic Control Devices - 2011 Edition"
1322:
with specially shaped lights to assist people with colour blindness
521:
underneath the green signal and shows a green left or ahead arrow.
3626:
3551:
2474:(in Greek). Athens: BP of Greece. 1962. p. 20. Archived from
1972:"Traffic lights | Traffic Signs and Lights | ontario.ca"
1666:
1658:
1611:
1538:
1508:
1488:
1401:
1325:
1309:
1279:
1227:
1198:
1172:
1160:
1100:
1046:
971:
823:
813:
792:
739:
Not to be confused with the flashing green for protected turns as
696:
610:
583:
564:
532:, and at the intersection of West 3rd Street and Mesaba Avenue in
507:
378:
354:
343:
302:
259:
219:
1342:, with a double red light for redundancy and increased visibility
2700:
2566:
2396:"Giving way at controlled intersections - New Zealand Road Code"
1713:
1275:
885:
2704:
2016:"Red, stop. Green, go. Flashing red, stop. But flashing green?"
31:
North American railroad signals § Early mechanical signals
1618:
and get directly on the highway. Meters often only operate in
1566:
Installation of this signal outside of China is banned by the
1563:
signal that displays all three colours in one signal section.
1271:
139:
76:
35:
1633:
traffic are reduced to five lanes of bridge traffic in about
18:
List of variations in traffic light signalling and operation
3739:
Comparison of traffic signs in English-speaking territories
2216:
Dallas Phasing With Doghouse Configuration - Lead Left-turn
1543:
The "multiple arrow traffic light" in Tianjin (variant two)
2232:"Flashing Yellow Arrows Coming to Arlington Intersections"
2220:
Dallas Phasing With Doghouse Configuration - Lag Left-turn
1806:"The flashing yellow left-turn signal: What does it mean?"
797:
Red and yellow pedestrian signaling at an intersection in
1559:
Another type of signal that can be found in China is the
326:
In the UK and Ireland, flashing amber lights are used at
264:
UK sign indicating a pair of flashing red light signals.
239:
In traffic engineering, there are regional and national
1232:
One example of a preemptive traffic signal warning sign
588:
Horizontal Dallas display viewed from the left turn bay
163:
101:
2331:"BC Ministry of Transportation and Infrastructure FAQ"
1376:
red – a square (somewhat larger than the ball shape).
1203:
A traffic light in Italy displaying green and yellow.
1051:
A traffic light in Germany turning from red to green.
911:
uses a similar "B" light for buses, but it is green.
615:
Doghouse Dallas display viewed from the left turn bay
763:
at fire stations and at crosswalks accompanied by a
3716:
3691:
3660:
3544:
3518:
3491:
3443:
3422:
3357:
3132:
2954:
2908:
2899:
2847:
2809:
2738:
2211:
2209:
2001:"What do flashing green lights mean? | TranBC"
935:At many intersections in the US, intersections use
2357:, Registry of Motor Vehicles Division (c. 2015).
2183:"www.npa.go.jp/annai/license_renewal/english.pdf"
1685:for both pedestrian and vehicular traffic but in
740:
389:explains the flashing yellow arrow configuration.
3707:Traffic Signs Regulations and General Directions
1513:The "bar traffic light" in Tianjin (variant one)
1597:or metering light is a device, usually a basic
1055:In most European countries (including Austria,
2398:. New Zealand Transport Agency. Archived from
1855:2009 Manual on Uniform Traffic Control Devices
1770:2009 Manual on Uniform Traffic Control Devices
779:should be more aware of incoming pedestrians.
386:Ohio Manual of Uniform Traffic Control Devices
276:, a flashing red light is the equivalent of a
2716:
2696:National Cooperative Highway Research Program
2349:
2347:
2060:"Vienna Convention on Road Signs and Signals"
750:, a flashing green globe signal is used at a
90:The examples and perspective in this article
8:
3734:Comparison of MUTCD-influenced traffic signs
901:, there is a similar "T" lamp in yellow for
637:Flashing red ball, yellow ball, or red arrow
495:Hold the left or hold the right arrangements
2539:Manual on Uniform Traffic Control Devices,
1845:
1568:Vienna Convention on Road Signs and Signals
1295:Vienna Convention on Road Signs and Signals
1213:Vienna Convention on Road Signs and Signals
686:Vienna Convention on Road Signs and Signals
445:Vienna Convention on Road Signs and Signals
70:Learn how and when to remove these messages
2905:
2806:
2723:
2709:
2701:
2355:Massachusetts Department of Transportation
1843:
1841:
1839:
1837:
1835:
1833:
1831:
1829:
1827:
1825:
767:or a normal pedestrian signal. In several
3700:Manual on Uniform Traffic Control Devices
2380:Manual on Uniform Traffic Control Devices
764:
208:Learn how and when to remove this message
190:Learn how and when to remove this message
128:Learn how and when to remove this message
2606:"Chapter 4D - MUTCD 2009 Edition - FHWA"
2289:Flashing Red Arrow Used in Cupertino, CA
2258:"Flashing Yellow Arrow Left-Turn Signal"
1625:On some large toll bridges, such as the
235:signal is received by the traffic light.
2887:Direction, position, or indication sign
2688:Left-turn Signal Display Animation Page
2632:"Pedestrian Countdown Signal Locations"
2260:. Michigan Department of Transportation
1879:. Maryland State Highway Administration
1790:Federal Highway Administration (2009).
1757:
620:protected/permissive left-turn phases.
592:In the configuration commonly known as
3536:Traffic light control and coordination
2528:number 4-263(I), "Strobes Florida DOT"
2435:"Simi Valley Adds Blue Traffic Lights"
1747:Traffic light control and coordination
1454:The double-red ball aspect is used in
728:
3531:Variations in traffic light operation
2611:Federal Highway Administration (FHWA)
2522:
2520:
2129:
2127:
2054:
2052:
2050:
2048:
2046:
2044:
2042:
491:lane also to turn in that direction.
7:
3504:Traffic signs in post-Soviet states
2135:"Traffic Signal Design Terminology"
2014:Groh-Gordy, Michelle (2006-10-01).
25:
3729:Comparison of European road signs
1804:Gursten, Steven M. (2013-03-16).
1370:green – an ordinary "ball" shape,
51:This article has multiple issues.
2433:Griggs, Gregory W (2006-09-06).
1627:San Francisco–Oakland Bay Bridge
1435:
1026:, and in certain other parts of
953:Pre-warning of a changing signal
227:traffic light (left) for use by
144:
81:
40:
2103:"EU Road Safety - Going Abroad"
1928:. Transportation Research Board
765:red and yellow pedestrian phase
59:or discuss these issues on the
3760:Pedestrian crossing components
3724:Comparison of Asian road signs
1794:. pp. 433-530. December 2009 .
1556:so-called "countdown meter").
1:
2654:Lydall, Ross (21 June 2010).
2139:www.traffic-signal-design.com
2114:"Saskatchewan Roads - Regina"
1373:yellow – a diamond shape, and
1139:, and the UK), as well as in
2300:Seattle Flashing Yellow Ball
2021:Inland Valley Daily Bulletin
1946:Tchir, Jason (2015-06-23).
1692:In Canada and the US, most
1610:, allowing car-poolers and
598:Dallas/Fort Worth Metroplex
571:Steady red and amber arrows
512:Right turn filter arrow in
170:the claims made and adding
104:, discuss the issue on the
3786:
3617:Polish road signs typeface
2694:(Report 493, 2003) by the
2567:"Traffic lights in the UK"
2278:Michigan Flashing Red Ball
1586:
1449:Baltimore County, Maryland
1346:The Canadian provinces of
1119:, most of Russia, Serbia,
944:Reverse-side red indicator
788:Pedestrian red-amber light
738:
28:
3661:International conventions
2316:October 22, 2013, at the
1705:and Manchester, England.
937:traffic signal preemption
931:Emergency priority signal
799:Framingham, Massachusetts
735:Flashing pedestrian green
441:traffic signal preemption
3342:Gaelic-speaking Scotland
2867:Prohibitory traffic sign
2849:Vienna Convention Groups
2581:"Traffic Signals Abroad"
2442:(Ventura County edition)
1708:In some cities (such as
1445:Henrico County, Virginia
1189:the United Arab Emirates
2877:Special regulation sign
2660:London Evening Standard
1608:high-occupancy vehicles
958:Between green and amber
841:Transit priority signal
722:Flashing pedestrian red
383:A standard sign in the
3397:Central America (SICA)
3167:Bosnia and Herzegovina
1544:
1514:
1494:
1404:urban areas including
1343:
1323:
1249:to flash alternately.
1233:
1204:
1061:Bosnia and Herzegovina
1052:
876:In some areas such as
829:
801:
706:
693:Australian turn arrows
616:
589:
517:
390:
349:
308:
265:
236:
3607:NPS Rawlinson Roadway
2834:Give Way / Yield sign
2819:Priority to the right
2801:Variable-message sign
2766:Driver location signs
2448:on September 30, 2007
1574:Middle Section Lights
1542:
1512:
1492:
1329:
1313:
1231:
1202:
1195:Between green and red
1099:, Latvia, Lithuania,
1050:
1043:Between red and green
878:Boston, Massachusetts
827:
796:
700:
661:Cupertino, California
614:
587:
559:Japanese green arrows
511:
382:
347:
340:Flashing yellow arrow
306:
299:Flashing amber/yellow
263:
223:
3114:United Arab Emirates
2746:Advisory speed limit
2092:"Driving Instructor"
1535:Multi-colour aspects
1356:Prince Edward Island
1314:A traffic signal in
1219:Traffic signal ahead
777:pedestrian crossings
717:Pedestrian crossings
676:state, particularly
530:Wilmington, Delaware
485:Regina, Saskatchewan
376:is phased wrongly.
110:create a new article
102:improve this article
92:may not represent a
2320:, Chapter 3, page 9
2081:"Kleine Ampelkunde"
1903:www.dot.state.mn.us
1330:A traffic light in
1253:White Strobe lights
903:double-decker trams
752:pedestrian crossing
701:An intersection in
468:(permissive only),
456:Steady green arrows
311:In the US, Canada,
3692:National standards
2481:on 13 January 2022
2421:Usenet Message-ID
2238:. January 14, 2016
2069:. 1 February 2023.
1952:The Globe and Mail
1923:"NCHRP Report 493"
1694:pedestrian signals
1545:
1515:
1495:
1477:In some cities in
1344:
1324:
1234:
1207:Traffic lights in
1205:
1053:
830:
802:
707:
617:
596:that began in the
590:
518:
391:
350:
309:
266:
237:
155:possibly contains
3747:
3746:
3514:
3513:
2895:
2894:
2440:Los Angeles Times
2423:(January 2, 2003)
2118:www.alpsroads.net
1810:Michigan Auto Law
1648:Timers at signals
1239:Western Australia
1163:, some places in
1010:, some places in
628:Arlington phasing
539:On the island of
534:Duluth, Minnesota
328:pelican crossings
218:
217:
210:
200:
199:
192:
157:original research
138:
137:
130:
112:, as appropriate.
74:
16:(Redirected from
3777:
3642:Trafikkalfabetet
3492:Former countries
2906:
2882:Information sign
2807:
2725:
2718:
2711:
2702:
2676:
2675:
2673:
2671:
2662:. Archived from
2651:
2645:
2644:
2642:
2641:
2636:
2628:
2622:
2621:
2619:
2618:
2602:
2596:
2595:
2593:
2592:
2577:
2571:
2570:
2563:
2557:
2556:
2549:
2543:
2537:
2531:
2524:
2515:
2514:
2512:
2511:
2497:
2491:
2490:
2488:
2486:
2480:
2473:
2463:
2457:
2456:
2454:
2453:
2444:. Archived from
2430:
2424:
2418:
2412:
2411:
2409:
2407:
2392:
2386:
2377:
2371:
2370:
2365:
2351:
2342:
2341:
2339:
2338:
2327:
2321:
2308:
2302:
2297:
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2286:
2280:
2275:
2269:
2268:
2266:
2265:
2254:
2248:
2247:
2245:
2243:
2228:
2222:
2213:
2204:
2203:
2201:
2200:
2194:
2188:. Archived from
2187:
2179:
2173:
2172:
2170:
2169:
2155:
2149:
2148:
2146:
2145:
2131:
2122:
2121:
2110:
2104:
2099:
2093:
2088:
2082:
2077:
2071:
2070:
2064:
2056:
2037:
2036:
2034:
2033:
2024:. Archived from
2011:
2005:
2004:
1997:
1991:
1990:
1982:
1976:
1975:
1968:
1962:
1961:
1959:
1958:
1943:
1937:
1936:
1934:
1933:
1927:
1919:
1913:
1912:
1910:
1909:
1895:
1889:
1888:
1886:
1884:
1873:
1867:
1866:
1864:
1862:
1847:
1820:
1819:
1817:
1816:
1801:
1795:
1788:
1782:
1781:
1779:
1777:
1762:
1642:
1641:
1637:
1497:These so-called
1439:
899:Hong Kong Island
882:Denver, Colorado
859:British Columbia
810:cross diagonally
758:
748:British Columbia
547:Indicative arrow
516:, Czech Republic
466:British Columbia
333:puffin crossings
251:Flashing signals
229:public transport
213:
206:
195:
188:
184:
181:
175:
172:inline citations
148:
147:
140:
133:
126:
122:
119:
113:
85:
84:
77:
66:
44:
43:
36:
21:
3785:
3784:
3780:
3779:
3778:
3776:
3775:
3774:
3770:Traffic signals
3750:
3749:
3748:
3743:
3712:
3687:
3656:
3540:
3510:
3487:
3439:
3418:
3353:
3277:North Macedonia
3128:
2950:
2891:
2843:
2805:
2781:Regulatory sign
2776:One-way traffic
2734:
2729:
2684:
2679:
2669:
2667:
2666:on 24 July 2010
2653:
2652:
2648:
2639:
2637:
2634:
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2625:
2616:
2614:
2604:
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2534:
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2518:
2509:
2507:
2499:
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2471:
2465:
2464:
2460:
2451:
2449:
2432:
2431:
2427:
2419:
2415:
2405:
2403:
2394:
2393:
2389:
2378:
2374:
2363:
2360:Driver's Manual
2353:
2352:
2345:
2336:
2334:
2329:
2328:
2324:
2318:Wayback Machine
2309:
2305:
2298:
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2287:
2283:
2276:
2272:
2263:
2261:
2256:
2255:
2251:
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2207:
2198:
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2167:
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2143:
2141:
2133:
2132:
2125:
2112:
2111:
2107:
2100:
2096:
2089:
2085:
2078:
2074:
2062:
2058:
2057:
2040:
2031:
2029:
2013:
2012:
2008:
1999:
1998:
1994:
1987:Popular Science
1984:
1983:
1979:
1970:
1969:
1965:
1956:
1954:
1945:
1944:
1940:
1931:
1929:
1925:
1921:
1920:
1916:
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1802:
1798:
1789:
1785:
1775:
1773:
1764:
1763:
1759:
1755:
1738:
1710:Newberg, Oregon
1650:
1639:
1635:
1634:
1591:
1585:
1576:
1537:
1507:
1487:
1383:
1308:
1303:
1301:Unusual designs
1291:
1289:Europe and Asia
1263:
1255:
1243:New South Wales
1226:
1224:Prepare to stop
1221:
1197:
1109:North Macedonia
1045:
960:
955:
946:
933:
843:
838:
836:Special signals
822:
789:
756:
744:
737:
724:
719:
703:South Australia
695:
667:Dover, Delaware
639:
630:
582:
573:
561:
549:
506:
497:
458:
453:
416:
362:Tucson, Arizona
342:
321:The Netherlands
301:
258:
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214:
203:
202:
201:
196:
185:
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161:
149:
145:
134:
123:
117:
114:
99:
86:
82:
45:
41:
34:
23:
22:
15:
12:
11:
5:
3783:
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3649:
3644:
3639:
3634:
3629:
3624:
3619:
3614:
3609:
3604:
3599:
3594:
3592:Highway Gothic
3589:
3584:
3579:
3574:
3569:
3564:
3559:
3557:ASTRA-Frutiger
3554:
3548:
3546:
3542:
3541:
3539:
3538:
3533:
3528:
3522:
3520:
3516:
3515:
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3415:
3414:
3411:
3408:
3405:
3402:
3394:
3393:
3392:
3382:
3377:
3372:
3367:
3361:
3359:
3355:
3354:
3352:
3351:
3350:
3349:
3344:
3337:United Kingdom
3334:
3329:
3324:
3319:
3314:
3309:
3304:
3299:
3294:
3289:
3284:
3279:
3274:
3269:
3264:
3259:
3254:
3249:
3244:
3239:
3234:
3229:
3224:
3219:
3214:
3209:
3204:
3199:
3194:
3189:
3187:Czech Republic
3184:
3179:
3174:
3169:
3164:
3159:
3154:
3149:
3144:
3138:
3136:
3130:
3129:
3127:
3126:
3121:
3116:
3111:
3106:
3101:
3096:
3091:
3086:
3081:
3076:
3071:
3066:
3061:
3056:
3051:
3046:
3041:
3036:
3031:
3026:
3021:
3016:
3011:
3006:
3001:
2996:
2995:
2994:
2989:
2979:
2974:
2969:
2964:
2958:
2956:
2952:
2951:
2949:
2948:
2943:
2938:
2933:
2928:
2923:
2918:
2912:
2910:
2903:
2897:
2896:
2893:
2892:
2890:
2889:
2884:
2879:
2874:
2872:Mandatory sign
2869:
2864:
2862:Priority signs
2859:
2853:
2851:
2845:
2844:
2842:
2841:
2839:Filter in turn
2836:
2831:
2821:
2815:
2813:
2811:Priority signs
2804:
2803:
2798:
2793:
2783:
2778:
2773:
2768:
2763:
2758:
2753:
2751:Bilingual sign
2748:
2742:
2740:
2736:
2735:
2730:
2728:
2727:
2720:
2713:
2705:
2699:
2698:
2683:
2682:External links
2680:
2678:
2677:
2646:
2623:
2597:
2572:
2558:
2544:
2532:
2516:
2492:
2468:Learn to Drive
2458:
2425:
2413:
2402:on 9 June 2011
2387:
2384:Section 10D.07
2372:
2366:. p. 82.
2343:
2333:. Th.gov.bc.ca
2322:
2303:
2292:
2281:
2270:
2249:
2223:
2205:
2174:
2150:
2123:
2105:
2094:
2083:
2072:
2038:
2006:
1992:
1977:
1963:
1938:
1914:
1890:
1868:
1821:
1796:
1783:
1756:
1754:
1751:
1750:
1749:
1744:
1737:
1734:
1649:
1646:
1587:Main article:
1584:
1581:
1575:
1572:
1536:
1533:
1506:
1503:
1499:"Heuer-Ampeln"
1486:
1483:
1382:
1379:
1378:
1377:
1374:
1371:
1307:
1304:
1302:
1299:
1290:
1287:
1262:
1259:
1254:
1251:
1225:
1222:
1220:
1217:
1196:
1193:
1107:, Montenegro,
1073:Czech Republic
1044:
1041:
959:
956:
954:
951:
945:
942:
932:
929:
842:
839:
837:
834:
821:
818:
787:
771:countries and
736:
733:
723:
720:
718:
715:
694:
691:
638:
635:
629:
626:
594:Dallas phasing
581:
580:Dallas phasing
578:
572:
569:
560:
557:
551:In Hong Kong,
548:
545:
505:
502:
496:
493:
457:
454:
452:
451:Steady signals
449:
415:
414:Flashing green
412:
411:
410:
406:
403:
373:Sparks, Nevada
341:
338:
300:
297:
293:United Kingdom
257:
254:
252:
249:
241:variations in
216:
215:
198:
197:
152:
150:
143:
136:
135:
96:of the subject
94:worldwide view
89:
87:
80:
75:
49:
48:
46:
39:
24:
14:
13:
10:
9:
6:
4:
3:
2:
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3665:
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3659:
3653:
3650:
3648:
3645:
3643:
3640:
3638:
3635:
3633:
3630:
3628:
3625:
3623:
3622:Rail Alphabet
3620:
3618:
3615:
3613:
3610:
3608:
3605:
3603:
3600:
3598:
3597:LLM Lettering
3595:
3593:
3590:
3588:
3585:
3583:
3580:
3578:
3575:
3573:
3570:
3568:
3565:
3563:
3560:
3558:
3555:
3553:
3550:
3549:
3547:
3543:
3537:
3534:
3532:
3529:
3527:
3526:Traffic light
3524:
3523:
3521:
3517:
3505:
3502:
3501:
3500:
3497:
3496:
3494:
3490:
3484:
3481:
3479:
3476:
3474:
3471:
3469:
3466:
3464:
3461:
3457:
3454:
3453:
3452:
3449:
3448:
3446:
3444:South America
3442:
3436:
3433:
3431:
3428:
3427:
3425:
3421:
3412:
3409:
3406:
3403:
3400:
3399:
3398:
3395:
3391:
3388:
3387:
3386:
3385:United States
3383:
3381:
3378:
3376:
3373:
3371:
3368:
3366:
3363:
3362:
3360:
3358:North America
3356:
3348:
3345:
3343:
3340:
3339:
3338:
3335:
3333:
3330:
3328:
3325:
3323:
3320:
3318:
3315:
3313:
3310:
3308:
3305:
3303:
3300:
3298:
3295:
3293:
3290:
3288:
3285:
3283:
3280:
3278:
3275:
3273:
3270:
3268:
3265:
3263:
3260:
3258:
3255:
3253:
3252:Liechtenstein
3250:
3248:
3245:
3243:
3240:
3238:
3235:
3233:
3230:
3228:
3225:
3223:
3220:
3218:
3215:
3213:
3210:
3208:
3205:
3203:
3200:
3198:
3195:
3193:
3190:
3188:
3185:
3183:
3180:
3178:
3175:
3173:
3170:
3168:
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3148:
3145:
3143:
3140:
3139:
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3131:
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3122:
3120:
3117:
3115:
3112:
3110:
3107:
3105:
3102:
3100:
3097:
3095:
3092:
3090:
3087:
3085:
3082:
3080:
3077:
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3062:
3060:
3057:
3055:
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3035:
3032:
3030:
3027:
3025:
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3020:
3017:
3015:
3012:
3010:
3007:
3005:
3002:
3000:
2997:
2993:
2990:
2988:
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2978:
2975:
2973:
2970:
2968:
2965:
2963:
2960:
2959:
2957:
2953:
2947:
2944:
2942:
2939:
2937:
2934:
2932:
2929:
2927:
2924:
2922:
2919:
2917:
2914:
2913:
2911:
2907:
2904:
2902:
2898:
2888:
2885:
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2880:
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2875:
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2870:
2868:
2865:
2863:
2860:
2858:
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2825:
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2817:
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2814:
2812:
2808:
2802:
2799:
2797:
2794:
2791:
2787:
2784:
2782:
2779:
2777:
2774:
2772:
2769:
2767:
2764:
2762:
2761:Dead end sign
2759:
2757:
2754:
2752:
2749:
2747:
2744:
2743:
2741:
2737:
2733:
2732:Traffic signs
2726:
2721:
2719:
2714:
2712:
2707:
2706:
2703:
2697:
2693:
2690:adapted from
2689:
2686:
2685:
2681:
2665:
2661:
2657:
2650:
2647:
2633:
2627:
2624:
2613:
2612:
2607:
2601:
2598:
2586:
2582:
2576:
2573:
2568:
2562:
2559:
2554:
2548:
2545:
2542:
2536:
2533:
2529:
2523:
2521:
2517:
2506:
2502:
2501:"Google Maps"
2496:
2493:
2477:
2470:
2469:
2462:
2459:
2447:
2443:
2441:
2436:
2429:
2426:
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2414:
2401:
2397:
2391:
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2304:
2301:
2296:
2293:
2290:
2285:
2282:
2279:
2274:
2271:
2259:
2253:
2250:
2237:
2236:Arlington Now
2233:
2227:
2224:
2221:
2217:
2212:
2210:
2206:
2195:on 2013-07-22
2191:
2184:
2178:
2175:
2164:
2160:
2154:
2151:
2140:
2136:
2130:
2128:
2124:
2119:
2115:
2109:
2106:
2102:
2098:
2095:
2091:
2087:
2084:
2080:
2076:
2073:
2068:
2061:
2055:
2053:
2051:
2049:
2047:
2045:
2043:
2039:
2028:on 2007-03-09
2027:
2023:
2022:
2017:
2010:
2007:
2003:. 3 May 2023.
2002:
1996:
1993:
1988:
1981:
1978:
1973:
1967:
1964:
1953:
1949:
1942:
1939:
1924:
1918:
1915:
1904:
1900:
1894:
1891:
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1797:
1793:
1787:
1784:
1771:
1767:
1761:
1758:
1752:
1748:
1745:
1743:
1742:Traffic light
1740:
1739:
1735:
1733:
1731:
1727:
1723:
1719:
1715:
1711:
1706:
1704:
1700:
1699:New York City
1695:
1690:
1688:
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1680:
1676:
1672:
1668:
1664:
1660:
1656:
1647:
1645:
1632:
1628:
1623:
1621:
1617:
1613:
1609:
1604:
1600:
1599:traffic light
1596:
1590:
1582:
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1571:
1569:
1564:
1562:
1557:
1553:
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1392:
1388:
1380:
1375:
1372:
1369:
1368:
1367:
1365:
1361:
1357:
1353:
1352:New Brunswick
1349:
1341:
1337:
1333:
1328:
1321:
1317:
1312:
1306:Shaped lenses
1305:
1300:
1298:
1296:
1288:
1286:
1283:
1281:
1277:
1273:
1268:
1267:strobe lights
1261:United States
1260:
1258:
1252:
1250:
1246:
1244:
1240:
1230:
1223:
1218:
1216:
1214:
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1021:
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989:
985:
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930:
928:
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916:
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890:
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883:
879:
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868:
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860:
856:
852:
848:
840:
835:
833:
826:
819:
817:
815:
811:
807:
806:Massachusetts
800:
795:
791:
790:
784:
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2936:South Africa
2857:Warning sign
2796:Tourist sign
2668:. Retrieved
2664:the original
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53:Please help
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3765:Traffic law
3717:Comparisons
3435:New Zealand
3404:El Salvador
3390:Puerto Rico
3322:Switzerland
3272:Netherlands
3084:South Korea
3069:Philippines
2786:Speed limit
2505:Google Maps
2242:17 February
1675:Philippines
1583:Ramp meters
1505:Bar signals
1430:Guadalajara
1414:yellow trap
1395:Nova Scotia
1360:Nova Scotia
1332:Guadalajara
1320:Nova Scotia
1133:Switzerland
1022:, parts of
863:Nova Scotia
741:noted above
602:yellow trap
439:as part of
367:yellow trap
285:New Zealand
233:transponder
3754:Categories
3681:Road signs
3567:Caractères
3401:Costa Rica
3267:Montenegro
3152:Azerbaijan
3119:Uzbekistan
3094:Tajikistan
3039:Kyrgyzstan
3034:Kazakhstan
2972:Bangladesh
2967:Azerbaijan
2901:By country
2790:by country
2640:2013-09-17
2617:2023-05-09
2591:2023-03-20
2585:Streets.mn
2510:2017-08-01
2485:6 February
2452:2008-04-16
2337:2013-09-17
2264:2008-01-03
2199:2013-09-17
2168:2019-06-03
2163:www.gov.uk
2144:2022-10-02
2032:2008-04-16
1957:2022-10-02
1932:2011-06-28
1908:2022-10-03
1815:2022-10-03
1753:References
1730:green wave
1631:toll booth
1595:ramp meter
1589:Ramp meter
1485:Clock-type
1422:California
1381:Double red
1167:, Israel,
1006:, most of
998:, most of
992:Montenegro
674:Washington
433:California
164:improve it
56:improve it
3647:Transport
3587:Helvetica
3577:Clearview
3572:Clarendon
3545:Typefaces
3451:Argentina
3430:Australia
3413:Nicaragua
3407:Guatemala
3257:Lithuania
3089:Sri Lanka
3079:Singapore
3014:Indonesia
2987:Hong Kong
2926:Mauritius
2824:Stop sign
2771:Logo sign
2756:Crossbuck
1663:Indonesia
1622:periods.
1620:rush hour
1464:Saskatoon
1393:, and in
1165:Indonesia
1157:Hong Kong
1141:Argentina
988:Lithuania
909:Singapore
421:must turn
317:Australia
289:Hong Kong
278:stop sign
245:operation
168:verifying
106:talk page
62:talk page
3602:Motorway
3582:DIN 1451
3478:Colombia
3410:Honduras
3292:Portugal
3172:Bulgaria
3099:Thailand
3064:Pakistan
3054:Mongolia
3049:Malaysia
2977:Cambodia
2941:Tanzania
2921:Botswana
2314:Archived
1736:See also
1679:Cambodia
1671:Thailand
1603:freeways
1561:Unilight
1472:Edmonton
1428:such as
1400:In some
1181:Paraguay
1177:Pakistan
1153:Colombia
1149:Botswana
1125:Slovenia
1121:Slovakia
1065:Bulgaria
1012:Thailand
1004:Malaysia
968:Cambodia
867:Manitoba
769:European
711:Victoria
657:Maryland
653:Delaware
647:Maryland
642:Michigan
541:Montreal
478:Manitoba
291:and the
118:May 2012
100:You may
3676:Traffic
3672:Vienna
3562:Austria
3483:Ecuador
3463:Bolivia
3423:Oceania
3375:Jamaica
3332:Ukraine
3297:Romania
3237:Ireland
3232:Iceland
3227:Hungary
3217:Germany
3212:Georgia
3202:Finland
3197:Estonia
3192:Denmark
3177:Croatia
3162:Belgium
3157:Belarus
3147:Austria
3142:Armenia
3124:Vietnam
3004:Georgia
2962:Armenia
2931:Namibia
2828:all way
2670:24 July
2406:13 June
1883:3 April
1718:Ukraine
1687:Vietnam
1683:Vietnam
1638:⁄
1468:Calgary
1460:Alberta
1406:Houston
1391:Ontario
1364:Ontario
1336:Jalisco
1316:Halifax
1169:Liberia
1145:Bahrain
1137:Ukraine
1105:Moldova
1097:Iceland
1093:Hungary
1089:Germany
1085:Finland
1081:Estonia
1077:Denmark
1069:Croatia
1057:Belarus
980:Estonia
976:Croatia
964:Austria
886:trolley
871:Alberta
851:Ontario
820:Signage
678:Seattle
553:Ireland
514:Liberec
470:Alberta
437:Ontario
336:flash.
268:In the
225:Swedish
162:Please
3668:Geneva
3652:Tratex
3519:Lights
3468:Brazil
3380:Mexico
3365:Canada
3327:Turkey
3317:Sweden
3307:Serbia
3302:Russia
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3282:Norway
3247:Latvia
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3207:France
3182:Cyprus
3134:Europe
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3024:Israel
2999:Cyprus
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2916:Angola
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1726:Poland
1722:KrakĂłw
1720:; and
1703:London
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1479:Mexico
1470:, and
1426:Mexico
1410:Dallas
1387:Quebec
1354:, and
1348:Quebec
1340:Mexico
1209:Greece
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1129:Sweden
1117:Poland
1113:Norway
1071:, the
1028:Europe
1024:Serbia
1016:Turkey
1008:Mexico
1000:Israel
996:Russia
984:Latvia
895:points
855:Quebec
847:Oregon
773:Mexico
729:Timers
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313:Brazil
274:Canada
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3612:Panno
3552:Arial
3473:Chile
3347:Wales
3312:Spain
3262:Malta
3242:Italy
3059:Nepal
3029:Japan
3009:India
2992:Macau
2982:China
2739:Signs
2635:(PDF)
2479:(PDF)
2472:(PDF)
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2193:(PDF)
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2067:UNECE
2063:(PDF)
1926:(PDF)
1667:China
1659:India
1616:queue
1612:buses
1526:will
1402:Texas
1280:MUTCD
1173:Macau
1161:India
1101:Malta
972:China
814:MUTCD
565:Japan
355:MUTCD
108:, or
3709:(UK)
3703:(US)
3637:Tern
3370:Cuba
3044:Laos
3019:Iran
2955:Asia
2672:2011
2487:2022
2408:2011
2311:ICBC
2244:2023
1885:2012
1863:2024
1851:"4D"
1778:2024
1766:"4L"
1714:Kyiv
1681:and
1523:full
1458:and
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