How far to the rear should flat mirrors be adjusted to show the driver?

The correct distance for adjusting flat mirrors is typically set to show the driver a view of the road behind the bus up to about 200 feet. This adjustment is crucial for ensuring that the driver has adequate visibility of the surrounding area, particularly when changing lanes, merging, or when students are boarding or disembarking from the bus.

A distance of 200 feet allows the driver to see potential hazards and adjust their actions accordingly. This visibility contributes significantly to the safety of both the students and other road users. Setting the mirrors to show the proper distance ensures that drivers can maintain a clear perspective on their surroundings, which is essential for the safe operation of a school bus.

Setting the mirrors any closer or further than this specified distance may hinder the driver's ability to assess their environment accurately.