Which of the following actions is most crucial when approaching a flashing red light?

When approaching a flashing red light, treating it as if it were a stop sign is essential for ensuring safe driving behavior. This means that drivers must come to a complete stop, check for oncoming traffic, and ensure the intersection is clear before proceeding. This action is crucial because a flashing red light signals the need for caution and alertness, indicating that other drivers might have the right of way, or there may be pedestrians or obstacles present.

In contrast, speeding through the light disregards the warning it provides, potentially leading to dangerous collisions. Checking your phone for directions distracts you from the road and the critical task of navigating the intersection safely. Yielding only to right turns does not encompass the full responsibility required at flashing red lights, as it overlooks the necessity of evaluating the entire intersection for safe passage. By complying with the requirement to stop completely, you can ensure a safer driving environment for yourself and others.