Alberta Commercial Driver Practice Exam

During a pre-trip inspection, it is crucial for a driver to ensure that the bus's mirrors are adjusted to minimize blind spots. Properly adjusted mirrors enhance safety by providing a clearer view of surrounding areas, allowing the driver to be more aware of pedestrians, cyclists, and vehicles in proximity to the bus. This adjustment is vital for making safe maneuvers, such as lane changes or turns, by maximizing visibility.

Mirrors serve as key tools in a driver's ability to assess their environment, and when properly positioned, they significantly reduce the risk of accidents that might occur due to limited visibility. Ensuring mirrors are set correctly is part of the driver's responsibility to maintain vehicle safety before operating the bus.

The other choices highlight conditions that are either unsafe or unnecessary. For example, mirrors that are cracked or broken would impair visibility, while stating that mirrors are not necessary undermines the importance of these safety features. Setting mirrors to only show the back of the bus would prevent a driver from seeing critical information relevant to safe driving, thereby increasing the risk of accidents.