What is required for proper mirror checks during the inspection?

For proper mirror checks during a pre-trip inspection, having two clean and adjusted exterior mirrors along with one interior mirror is essential. This configuration ensures that drivers have a comprehensive view of their surroundings, which is crucial for safe vehicle operation.

The two exterior mirrors provide coverage of blind spots and the sides of the vehicle, while the interior mirror aids in monitoring traffic directly behind. Each mirror must be clean and properly adjusted to eliminate any obstructions or distortions that could hinder visibility. By following this standard, drivers can better assess their environment, which significantly contributes to reducing the risk of accidents while driving.

Other options may not provide the necessary visibility required for safe driving. Relying on just one exterior mirror or adjusting only the interior mirror does not cover all angles necessary for effective monitoring of traffic and potential hazards.