What is a common requirement for the bus's exterior mirrors?

• A. The mirrors must be cracked for visibility
• B. The mirrors must be securely mounted and not damaged
• C. The mirrors must be flexible in movement
• D. The mirrors must be painted a bright color

Answer: (B)

For the exterior mirrors of a school bus, a common requirement is that they must be securely mounted and not damaged. This is crucial for several reasons.

First, securely mounted mirrors ensure they maintain their position while the bus is in motion, providing the driver with a clear and stable view of the surrounding traffic and pedestrians. Any movement or damage to the mirrors could limit visibility, which directly impacts the driver's ability to operate the bus safely.

Moreover, undamaged mirrors are less likely to create blind spots, which can lead to accidents, especially in a school bus where the safety of children is paramount. The mirrors must be positioned correctly to minimize these blind spots, allowing the driver to have a comprehensive view of what’s happening around the bus.

In contrast, options that suggest cracked mirrors, flexibility beyond normal adjustment, or specific colors do not emphasize the critical importance of secure and undamaged mirrors in terms of safety and functional efficiency.