What does a blinking runway light indicate for an aircraft on the ground?

A blinking runway light on the ground signifies that the aircraft should not proceed and is typically an indication to return to the starting point or to hold at its current location. This is crucial for safety, as it alerts pilots that there may be an unsafe condition ahead that necessitates their immediate attention and action.

In airport operations, blinking lights serve as warnings to ground aircraft, helping to manage traffic and prevent potential collisions. Therefore, the correct interpretation of a blinking runway light is to return to the starting point on the airport, giving pilots clear guidance to ensure their safety on the ground.