When should you check your mirrors while driving a commercial vehicle?

Answer: C — Regularly, and before changing lanes or turns

Checking your mirrors regularly while driving a commercial vehicle is essential for maintaining awareness of your surroundings and ensuring safety on the road. This practice allows a driver to monitor the position of other vehicles, pedestrians, and any potential hazards in the vicinity. By doing so before making lane changes or turns, drivers can make informed decisions and reduce the risk of collisions. Regular mirror checks help in identifying blind spots, understanding traffic flow, and ensuring that surrounding conditions are safe for maneuvering. This approach is not only a best practice for safe driving but is often emphasized in training materials for commercial driving to instill good habits that contribute to overall traffic safety. While some drivers may only check mirrors in specific situations like changing lanes, regular monitoring is universally recommended and critical in the dynamic environment of roadways where conditions can change rapidly.