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accelerator pedal is noted. When panic braking is detected, the Brake Assist system automatically develops maximum brake boost in order to mitigate a driver's tendency to brake without enough force. In doing so, Brake Assist has been shown to reduce stopping distance by a significant margin (up to 20% in some studies).
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The Volvo system
Collision Warning with Auto Brake 'CWAB' uses a radar to detect when a collision is likely and will pre-charge the brakes so that when the driver uses the brakes, however lightly, full braking is applied. The system will also flash a light and make a warning sound. If the driver does
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Many drivers are not prepared for the relatively high efforts required for maximum braking, nor are they prepared for the "buzzing" feedback through the brake pedal during ABS operation. If an emergency develops, a slow reaction and less than maximum braking input could result in insufficient time
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Brake Assist detects circumstances in which emergency braking is required by measuring the speed with which the brake pedal is depressed. Some systems additionally take into account the rapidity of which the accelerator pedal is released, pre-charging the brakes when a "panic release" of the
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If the system identifies an emergency, it automatically initiates full braking more quickly than any driver can move his or her foot. Emergency stopping distances can be shortened, reducing the likelihood of accidents – especially the common "nose-to-tail" incident.
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An electronic system designed to recognise emergency braking operation and automatically enhance braking effort improves vehicle and occupant safety, and can reduce stopping distances by up to 70 ft (21 m) at 125 mph (201 km/h)
329:
In the EU, that regulation applies since 24 November 2009 all new passenger car and light commercial vehicle types already had to be equipped with brake assist systems as standard. Since 24 February 2011, this has applied to all new vehicles.
263:. This system works much like the Volvo system with a warning and precharging of the brakes but will not automatically brake for the driver. The BAS Plus system has been shown to significantly reduce the incidence of
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This brake assist regulation is not used in the United States because the United States do not use UNECE regulations. Instead, the USA plan to use the automatic emergency braking (AEB) on a voluntary basis.
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pedal is pushed, the system detects if the driver is trying to execute an emergency stop, and if the brake pedal is not fully applied, the system overrides and fully applies the brakes until the
216:
EBA is designed to detect such "panic stops" and apply maximum braking effort within milliseconds. It interprets braking behaviour by assessing the rate that the brake pedal is activated.
355:
Brake Assist System (BAS)" means a function of the braking system that deduces an emergency braking event from a characteristic of the driver's brake demand and, under such conditions:
178:. Research conducted in 1992 at the Mercedes-Benz driving simulator in Berlin revealed that more than 90% of drivers fail to brake with enough force when faced with an emergency.
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not respond to the warning at the point where a collision cannot be avoided the system will apply the brakes automatically and dramatically reduce the speed of the collision.
252:. In 1998 Mercedes-Benz became the first company to make Brake Assist standard equipment on all its models; other brands including Volvo and BMW soon followed suit.
279:
This system is not considered by regulations as an emergency brake assist but as an advanced emergency braking because it does not rely on the driver to brake.
267:, and so is very significant in the development of driver aids that improve road safety. Other systems like the Volvo CWAB (see below) are also available.
318:
Both the Volvo and the
Mercedes-Benz radar systems are also used for the speed/distance regulated cruise control systems used by both manufacturers.
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In
October 2007 the European Commission announced that it wanted Brake Assist to be included on all new models sold in the EU as standard by 2009.
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No. 139, Uniform provisions concerning the approval of passenger cars with regard to Brake Assist
Systems, in some UNECE countries.
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Thus the brake assist is neither an
Autonomous Emergency Braking nor a Collision Avoidance System as it relies on human input.
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braking technology that increases braking pressure in an emergency. The first application was developed jointly by
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https://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/2020/ECE-TRANS-WP.29-343-Rev.28-Add.1.pdf
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https://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/2020/ECE-TRANS-WP.29-343-Rev.28-Add.1.pdf
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in stop start traffic. Mercedes-Benz also has a similar system called
Distronic Plus.
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introduced brake assist across most of its worldwide passenger cars. This includes
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https://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/2020/R139am2e.pdf
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Many UNECE countries apply this passenger cars regulation since 2016 or 2017.
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359:(a) Assists the driver to deliver the maximum achievable braking rate; or
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362:(b) Is sufficient to cause full cycling of the Anti-lock Braking System
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Volvo cars can also be equipped with the City Safety System which
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417:"Royal Society for the Prevention of Accidents page"
259:(BAS Plus) was first made standard equipment on the
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244:In December 1996 BAS premiered to the world on the
71:. Unsourced material may be challenged and removed.
376:Entry into force of original version: 22/01/2017.
193:(ABS) takes over to stop the wheels locking up.
553:"Europe wants Brake Assist as standard by 2009"
481:"Europe wants Brake Assist as standard by 2009"
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213:or distance to stop before an accident occurs.
573:Vehicle Safety Equipment "Drive Safer America"
593:
8:
568:SafelyThere - Continental Automotive Systems
483:. Motortorque.askaprice.com. Archived from
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261:W221 (2006 onwards) S-Class Mercedes-Benz
196:This is a lower level of automation than
131:Learn how and when to remove this message
467:"What is emergency brake assist or EBA?"
408:
444:. Archersofashby.co.uk. Archived from
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347:Brake assist system is regulated by
69:adding citations to reliable sources
1175:Vehicle identification number (VIN)
386:Electronic brakeforce distribution
25:
36:Advanced emergency braking system
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1201:
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618:Part of a series of articles on
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32:Emergency brake (disambiguation)
56:needs additional citations for
563:Continental Automotive Systems
442:"Emergency Brake Assist – EBA"
181:By interpreting the speed and
1:
1009:Approach and departure angles
27:Automobile braking technology
1243:Vehicle braking technologies
397:Electronic stability control
1238:Vehicle safety technologies
1072:Automotive light bulb types
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202:collision avoidance system
198:advanced emergency braking
29:
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1092:high-intensity discharge
191:anti-lock braking system
80:"Emergency brake assist"
776:Stressed member engine
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156:emergency brake assist
908:Windshield/windscreen
366:UN Regulation No. 139
246:Mercedes-Benz S-Class
1077:Daytime running lamp
313:automatically brakes
65:improve this article
30:For other uses, see
1039:Weight distribution
971:Omniview technology
559:, October 10, 2007.
265:rear-end collisions
162:) is a term for an
1158:Registration plate
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878:Glass run channel
812:Trunk/boot/dickie
609:Automotive design
391:Anti-lock braking
257:Brake Assist Plus
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18:Brake Assist Plus
16:(Redirected from
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487:on 2008-02-13
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448:on 2009-12-04
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54:This article
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43:
42:
37:
33:
19:
1163:vanity plate
1102:trafficators
913:washer fluid
893:Power window
888:Opera window
800:Compartments
688:Crumple zone
673:Cabrio coach
617:
533:
522:
511:
500:
489:. Retrieved
485:the original
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461:
450:. Retrieved
446:the original
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425:. Retrieved
421:the original
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168:Daimler-Benz
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144:Brake assist
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75:
63:Please help
58:verification
55:
1097:sealed beam
1029:Roll center
1024:Ride height
961:Japan black
956:Instruments
941:Curb feeler
807:Hood/bonnet
200:which is a
176:LucasVarity
121:August 2018
1232:Categories
883:Greenhouse
491:2009-11-29
452:2009-11-29
427:2007-03-07
403:References
343:Regulation
164:automobile
91:newspapers
1137:Tow hitch
1055:equipment
981:Tire/tyre
840:Gull-wing
830:Butterfly
791:Trunk lid
734:Monocoque
638:Framework
1197:Category
1082:Headlamp
1064:Lighting
1053:Exterior
1019:Overhang
1002:Geometry
986:run-flat
966:Nerf bar
781:Subframe
749:Platform
739:Overhang
651:Beltline
380:See also
364:—
287:In 1997
250:SL-Class
208:Overview
1207:Commons
903:Sunroof
855:Suicide
850:Sliding
845:Scissor
786:Tonneau
771:Spoiler
678:Chassis
293:Corolla
235:Systems
105:scholar
1217:Portal
1087:hidden
835:Canopy
744:Pillar
725:shaker
710:Grille
703:skirts
698:ponton
693:Fender
666:Dagmar
661:Bumper
299:, and
289:Toyota
283:Toyota
107:
100:
93:
86:
78:
1170:Theft
1151:Legal
1130:power
991:spare
976:Parts
918:wiper
870:Glass
822:Doors
720:scoop
393:(ABS)
307:Other
301:Yaris
297:Camry
271:Volvo
187:brake
183:force
154:) or
112:JSTOR
98:books
1120:Horn
860:Swan
764:rack
759:Roof
715:Hood
629:Body
620:cars
248:and
170:and
84:news
34:and
172:TRW
160:EBA
152:BAS
150:or
67:by
1234::
555:,
303:.
295:,
148:BA
601:e
594:t
587:v
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469:.
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174:/
158:(
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128:(
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119:(
109:·
102:·
95:·
88:·
61:.
38:.
20:)
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