Railroad Crossbuck and Flashing Lights
Railroad Cross-buck and Flashing Lights: Flashing lights may be used with cross-buck signs. Always stop when the light begins to flash and be alert for approaching trains. Do not proceed until all trains or any other vehicles using the rails have passed, the tracks are clear, and the lights are no longer flashing. Be especially alert at multi-track crossings because a second train could be approaching from the opposite direction.