REIL stands for

REIL stands for

• A. Runway End Identifier Lights
• B. Runway Elevation Indicator Lights
• C. Runway Edge Illuminator Lights
• D. Runway End Illuminator Lights

Answer: (A)

REIL stands for Runway End Identifier Lights. These are a pair of synchronized flashing lights located on each side of the runway threshold that flash together to give pilots a quick, unmistakable cue to identify the exact end of the runway, especially in poor visibility or at complex airports. They help pilots locate the threshold quickly and reduce the chance of confusion with other runways. They’re specifically about identifying the runway end, not about elevation indications or edge lighting, which is why the other described concepts don’t fit.

REIL stands for Runway End Identifier Lights. These are a pair of synchronized flashing lights located on each side of the runway threshold that flash together to give pilots a quick, unmistakable cue to identify the exact end of the runway, especially in poor visibility or at complex airports. They help pilots locate the threshold quickly and reduce the chance of confusion with other runways. They’re specifically about identifying the runway end, not about elevation indications or edge lighting, which is why the other described concepts don’t fit.