Why is it necessary to check mirrors during a pre-trip inspection?

Checking the mirrors during a pre-trip inspection is crucial because it ensures they are secure and provide proper visibility. Mirrors are an essential safety feature for drivers, enabling clear views of the surrounding environment, including blind spots and other vehicles. If the mirrors are loose, misaligned, or damaged, it could significantly hinder the driver's ability to see other traffic, pedestrians, and obstacles, increasing the risk of accidents.

While cleaning mirrors might improve visibility, the primary focus during a pre-trip inspection is to confirm their structural integrity and proper adjustment for optimal functionality. Adjusting mirrors for comfort is not a priority in the inspection process, as comfort pertains more to the driver's personal preference than to safety. Checking for cracks or damages is a good practice, but it is a subset of ensuring that mirrors are secure and operational. Therefore, the primary reason mirrors are checked in a pre-trip inspection is tied directly to their role in providing the necessary visibility for safe driving.