Final answer:
RWSL stands for Runway Status Lights, an aviation system designed to prevent runway incursions and accidents by providing visual alerts to pilots.
Step-by-step explanation:
In the context of aviation, RWSL stands for Runway Status Lights. It is a fully automated system designed to reduce the likelihood of runway incursions and accidents. The system uses ground radar to detect vehicles and aircraft on the surface of the airport. When the system detects a potential conflict, lights are turned on to provide a clear warning. The entire concept can be found in Aim 2-1-6 of the Aeronautical Information Manual which is a reference guide created by the Federal Aviation Administration for pilots and air traffic controllers.
For instance, if an aircraft or vehicle is about to enter or cross a runway, red lights will illuminate to indicate that it is unsafe to enter the runway. Likewise, if a runway is occupied by another aircraft ready for departure or landing, the lights will warn other pilots from entering the runway. Therefore, the RWSL system provides an additional layer of safety in operations at busy airports.
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