"Stop at the red light, turn off the light and don't use it", right?

This word is correct, which means that when a train passes by, it will turn red. At this time, pedestrians and cars are not allowed to pass, and they must wait for the train to pass before leaving. Turning off the lights means that the lights may be broken or being repaired, not that the railway is out of use or abandoned. However, if you find grass growing on the railway, it means that the railway must be abandoned. If a train passes by, it will turn red. When it turns blue, it means it is safe and can pass. However, not all railway crossings have such lights, and most railway crossings have no such lights.