How often should a commercial driver check their mirrors?

A commercial driver should check their mirrors regularly as part of their ongoing scan for potential hazards to ensure the safety of themselves and their passengers. This frequent observation helps the driver maintain awareness of their surroundings, which is crucial when operating a passenger vehicle.

Regular mirror checks are essential to recognize any vehicles or obstacles that may pose a risk, especially in busy traffic conditions or when maneuvering in tight spaces. This proactive approach creates opportunities to respond to changing conditions effectively, enhancing overall safety.

The other options suggest limited scenarios for checking mirrors, such as only during lane changes or at intersections, which would not provide adequate awareness of potential hazards that could occur at other times. Long intervals, like checking once every hour during long trips, also diminish the driver's ability to respond quickly to unexpected situations that could arise at any moment. Regular mirror checks form an integral part of safe driving practices and are vital for any commercial driver transporting passengers.