UK Driving Theory Practice Exam (2)

When red lights are flashing at a level crossing, the appropriate action is to stop before the barrier. This is a critical safety measure designed to prevent collisions with trains that may be approaching the crossing. The flashing red lights serve as a warning that it is unsafe to cross, indicating that a train is either already present or is approaching quickly. Stopping before the barrier ensures that you are at a safe distance from the tracks, allowing you to assess the situation and wait until it is safe to proceed. The red lights specifically indicate to drivers that they must not cross the tracks until the lights stop flashing and any barriers have lifted, confirming that it is safe to do so. Always adhering to this rule helps to prevent accidents and ensures the safety of all road users.