What does a solid red traffic light mean?

Answer: B — Stop and do not proceed until the light turns green

A solid red traffic light indicates that all vehicles must stop before entering the intersection or crosswalk. Drivers are required to remain stopped until the light changes to green. This traffic signal is crucial for ensuring the safety of all road users, including pedestrians and other vehicles, by controlling the flow of traffic and preventing potential collisions. Proceeding with caution, yielding to pedestrians, or turning left if safe are actions that apply to specific scenarios or under certain other traffic signals but do not align with the directive of a solid red light. The key rule of a solid red light is the obligation to stop and wait for the signal to change, promoting a predictable and safe environment for everyone on the road.