What does a flashing red traffic signal indicate?

Answer: A — Stop and proceed when safe

A flashing red traffic signal indicates that drivers must come to a complete stop and then proceed when it is safe to do so. This signal functions similarly to a stop sign, meaning that all drivers must evaluate the situation at the intersection before continuing. It is important for drivers to exercise caution, check for any pedestrians or other vehicles that may also be present, and ensure the way is clear before proceeding. This traffic signal is designed to enhance safety at intersections, particularly in situations where traffic might be heavy or where visibility could be limited. Options that suggest caution, yielding, or signaling for emergency vehicles do not align with the primary directive of the flashing red light which specifically instructs drivers to stop first.