REILs are strobe lights located at which part of the runway?

REILs are strobe lights located at which part of the runway?

• A. The beginning of the runway
• B. The middle of the runway
• C. The far end of the runway
• D. Along the taxiway line

Answer: (A)

Runway End Identifier Lights mark the threshold of a runway. They’re two synchronized white strobe lights placed at the threshold on either side, designed to give pilots a rapid, positive cue to identify the end of the runway where landing traffic begins. This placement at the threshold makes them most helpful for establishing the approach end, especially in low visibility, night, or cluttered environments. They aren’t located in the middle, at the far end, or along taxiways, which is why identifying the threshold is the correct concept.

Runway End Identifier Lights mark the threshold of a runway. They’re two synchronized white strobe lights placed at the threshold on either side, designed to give pilots a rapid, positive cue to identify the end of the runway where landing traffic begins. This placement at the threshold makes them most helpful for establishing the approach end, especially in low visibility, night, or cluttered environments. They aren’t located in the middle, at the far end, or along taxiways, which is why identifying the threshold is the correct concept.