When facing a flashing red signal, what must the operator do?

When facing a flashing red signal, the operator must come to a complete stop. This is similar to a stop sign, and the purpose of the flashing red light is to indicate that all traffic must halt before proceeding. After stopping, the driver should check for other vehicles and pedestrians before safely continuing when the intersection is clear. This rule is intended to enhance safety at intersections and ensure that all road users are aware of each other's presence before moving forward.

The other options do not reflect the requirement of stopping at a flashing red signal, which could lead to misunderstandings about the appropriate action required in such situations.