Definition

An Autonomous Runway Incursion Warning System (ARIWS) is a system which provides autonomous detection of a potential incursion or of the occupancy of an active runway and a direct warning to a flight crew or a vehicle operator (ICAO, Annex 14, Aerodromes).

General Description

An ARIWS operates based on a surveillance system, independent of the air traffic control system, that is designed and sited to monitor the situation on a runway and which automatically transmits this information to warning lights located at both the runway takeoff threshold and at selected runway entrances. The system provides warnings as follows: