What does a red traffic signal mean?

A red traffic signal universally indicates that vehicles must come to a complete stop and remain stationary until the light changes to green. This rule is enforced to ensure the safety of all road users, including drivers, pedestrians, and cyclists. Stopping at a red light helps prevent collisions that could occur if vehicles were to proceed without waiting for the signal to change.

It establishes clear communication on the road, allowing everyone to understand when it is safe to move forward. Other options suggest actions that may compromise traffic safety. For instance, proceeding with caution or preparing to stop could lead to confusion and potential accidents. Therefore, the requirement to stop firmly enforces order and predictability at intersections.