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What (who) is runway edge lights - definition
Runway edge lights
![An aircraft landing at [[Zurich International Airport]], with runway edge lights visible](https://commons.wikimedia.org/wiki/Special:FilePath/Landing at Zurich International Airport.jpg?width=200 "An aircraft landing at [[Zurich International Airport]], with runway edge lights visible")
LIGHTING SYSTEM USED TO IDENTIFY THE PERIMETER OF AN AIRPORT RUNWAY
High Intensity Runway Lights; HIRL; Medium Intensity Runway Lights; Low Intensity Runway Lights; LIRL; Runway Edge Lights; Runway edge light
Runway edge lighting are used to outline the edges of runways during periods of darkness or restricted visibility conditions. These light systems are classified according to the intensity they are capable of producing:
Runway end identifier lights
AIRPORT RUNWAY LIGHTING SYSTEM TO AID RAPID IDENTIFICATION OF THE APPROACH END OF A RUNWAY
Runway End Indentification Lighting; REIL; Runway End Identification Lights; Runway End Identifier Lights
Runway end identifier lights (REIL) (ICAO identifies these as Runway Threshold Identification Lights) are installed at many airports to provide rapid and positive identification of the approach end of a particular runway. The system consists of a pair of synchronized flashing lights located laterally on each side of the runway threshold.
Runway status lights
![Runway Status Lighting (RWSL) activated at [[San Diego International Airport]]](https://commons.wikimedia.org/wiki/Special:FilePath/9cMCO-Curved-RELs.jpg?width=200 "Runway Status Lighting (RWSL) activated at [[San Diego International Airport]]")
 operational concept.jpg?width=200 "RWSL Operational Concept")
AVIATION SAFETY SYSTEM
Runway Status Lights
Runway Status Lights (RWSL) are a visual alerting system installed in some airport taxiways and runways for the purpose of collision-avoidance. When illuminated, red high-intensity LEDs indicate the presence of another vehicle either departing, occupying, or landing on an active runway.
