When must you wait at a level crossing?

You answered everything correctly. At a level crossing, you must always stop if a red flashing light is activated, if the barriers are lowering or are already closed, or if a railway employee signals with a white-red-white flag. These warnings indicate that a train is approaching and it is unsafe to cross. Ignoring any of these signals is dangerous and against traffic regulations. Always wait until the warning has ended and the crossing is clear before proceeding. This ensures your safety and the safety of others.