Colorado CDL Practice Test 2025 – All-in-One Guide to Master Your Commercial Driver's License Exam!

When approaching flashing red lights at a railroad crossing, the appropriate response is to stop immediately and wait for the lights to stop flashing. This requirement is based on safety regulations designed to ensure that drivers do not attempt to cross the tracks when a train may be approaching. The flashing red lights indicate that it is unsafe to proceed, as a train could be on its way, and stopping allows the driver to assess the situation and ensure that no train is in sight before continuing. Waiting for the lights to cease flashing is critical for the safety of the driver and any passengers, as well as for any potentially crossing trains.