Final answer:
The correct response to flashing red lights at a railroad crossing is to always stop immediately and wait for the train to pass to ensure safety.
Step-by-step explanation:
When encountering flashing red lights at a railroad crossing, the correct response is to stop immediately and wait for the train to pass. This is similar to stopping at a red traffic light in normal road situations, where safety is the priority. In the event of an emergency, like a pregnant woman about to give birth in the vehicle, it may seem necessary to proceed, but at a railroad crossing, this is not safe due to the high risk of collision with a train. The only course of action is to stop, look, and listen, and remain stationary until the train has completely passed and the lights have stopped flashing.