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When an instrument runway lighting is designed, the last 600 metres (2,000 ft), or one-half of the runway length available (whichever is less), are bi-directional. They look white to the pilot approaching from the short end of the runway, but to a pilot approaching from the other end, who would
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Many HIRL and MIRL systems have variable intensity controls, whereas the LIRLs normally have one intensity setting. At airports where there is a control tower, the tower will manage the lights to account for visibility and pilot preference, but some airports do not have control towers. These
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airports will have Pilot
Controlled Lighting, or PCL, where pilots can adjust the lighting themselves by keying a microphone button a certain number of times.
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The majority of runway edge lights are clear or white, but there are some exceptions to provide additional information to pilots in certain circumstances.
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during periods of darkness or restricted visibility conditions. These light systems are classified according to the
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be landing or taking off in that direction, they are yellow to indicate that the runway is nearing the end.
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161:. United States Department of Transportation. p. 37. Archived from
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Lighting system used to identify the perimeter of an airport runway
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19:"LIRL" redirects here. For the airport with ICAO code LIRL, see
126:"Light Up Your Night: A Guide to Airport Lighting Systems"
188:"Airport and Runway Lighting Systems Explained"
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130:Aircraft Owners and Pilots Association
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56:Medium intensity runway lights (MIRL)
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53:High intensity runway lights (HIRL)
59:Low intensity runway lights (LIRL)
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124:Rossier, Robert N. (1998-12-01).
91:Precision approach path indicator
41:are used to outline the edges of
34:, with runway edge lights visible
158:Federal Aviation Administration
101:Visual approach slope indicator
49:they are capable of producing:
186:Houston, Sarina (2017-11-11).
150:"Runway Safety Best Practices"
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96:Runway end identifier lights
32:Zurich International Airport
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86:Pilot-controlled lighting
81:Approach lighting system
30:An aircraft landing at
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39:Runway edge lighting
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222:Airport lighting
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194:. Archived from
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21:Latina Air Base
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198:on 2017-12-01
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200:. Retrieved
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133:. Retrieved
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192:The Balance
202:2017-11-20
172:2017-11-20
135:2021-07-07
107:References
47:intensity
216:Category
75:See also
43:runways
166:(PDF)
153:(PDF)
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114:^
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