What does a red traffic signal mean for a commercial driver?

Answer: B — Stop and wait for the green signal before proceeding

A red traffic signal means that all drivers, including commercial drivers, must stop their vehicles at the designated stop line, crosswalk, or intersection, and wait until the signal turns green before proceeding. This rule is crucial for maintaining safety on the road, as it helps prevent collisions and ensures that traffic flows in an orderly manner. For commercial drivers, adhering to traffic signals is especially important due to the size and weight of their vehicles, which may take longer to stop and may cause more severe damage in the event of an accident. Stopping at a red signal also allows them to assess any potential hazards, such as pedestrians or vehicles, before continuing their journey. Understanding and obeying traffic signals is a fundamental aspect of driving safety that all commercial drivers must prioritize in their training and practice.