Lighting Systems - Runway End Identifier Lights (REIL)

The Runway End Identifier Lights (REIL) system provides rapid and positive identification of the end of the runway. The system consists of two synchronized, unidirectional flashing lights. The lights are positioned on each corner of the runway landing threshold, facing the approach area and aimed at an angle of 10 to 15 degrees.

REIL is effective for identification of a runway surrounded by a preponderance of other lighting; identification of a runway which lacks contrast with surrounding terrain; and identification of a runway during reduced visibility. The REIL provides three intensity settings, and has an approximate range of three miles in daylight and twenty miles at night. The REIL can be controlled by the air traffic control tower, remotely by the pilot, by automatically sensing the electrical current through the runway edge lights, or manually from the control cabinet.

FAA REIL Project Manager:
Ndubuisi Nnorom -

Current Status: There are approximately 800 REIL systems deployed in the National Airspace System (NAS) using various manufacturers.

REIL assembly unit  REIL power/control cabinet