What does a flashing red light mean while driving?

Answer: B — Stop and proceed when safe

A flashing red light while driving indicates that the vehicle must come to a complete stop and can proceed only when it is safe to do so. This signal functions similarly to a stop sign, alerting drivers to check for oncoming traffic and ensuring that the intersection is clear before moving forward. It is important for maintaining safety and preventing accidents at intersections where the visibility may be limited or where other vehicles and pedestrians may be present. The emphasis is on stopping first, then ensuring that the path is clear before proceeding, which helps reinforce safe driving habits and compliance with traffic laws.