School Buses

Danger Zones and Use of Mirrors

Introduction

School bus drivers must have a commercial driver’s license (CDL) with a passenger endorsement and a school bus endorsement if they drive a school bus designed to transport (seat) 16 or more persons, including the driver. The CDL and school bus endorsement does not apply to vehicles that transport less than 16 persons.

To get a school bus endorsement, you must pass a knowledge test on this chapter of the manual as well as a written test for a passenger endorsement (refer to Chapter 4). If your school bus has air brakes, you must also pass a knowledge test on Chapter 5. You must also pass the skills test required for the class of school bus you drive or intend to drive.

This chapter does not provide information on all the federal and state requirements needed before you drive a school bus. You should be thoroughly familiar with all specific school bus procedures, laws, and regulations in Idaho, the State Department of Education and your school district.

Danger Zones and Use Of Mirrors

Danger Zones

The “danger zone” is the area on all sides of the bus where children are in the most danger of being hit, either by another vehicle or their own bus. The danger zones may extend as much as 30 feet from the front bumper of which the first 10 feet is the most dangerous, 10 feet from the left and right sides of the bus and 10 feet behind the rear bumper of the school bus. In addition, the area to the left of the bus is always considered dangerous because of passing cars. Figure 10.1 illustrates these danger zones.

Danger Zones Around School Buses

Correct Mirror Adjustment

Proper adjustment and use of all mirrors is vital to the safe operation of the school bus in order to observe the danger zone around the bus and look for students, traffic, and other objects in this area. You should always check each mirror before operating the school bus to obtain maximum viewing area. If necessary, have the mirrors adjusted.

Outside Left & Right Side Flat Mirrors

These mirrors are mounted at the left and right front corners of the bus at the side or front of the windshield. They are used to monitor traffic, check clearances and students on the sides and to the rear of the bus. There is a blind spot immediately below and in front of each mirror and directly in back of the rear bumper. The blind spot behind the bus extends 50 to 150 feet, and could extend up to 400 feet depending on the length and width of the bus.

Ensure that the mirrors are properly adjusted so you can see:

  • 200 feet or 4 bus lengths behind the bus.
  • Along the sides of the bus.
  • The rear tires touching the ground.
Flat Mirrors

Outside Left and Right-Side Convex Mirrors

The convex mirrors are located below the outside flat mirrors. They are used to monitor the left and right sides at a wide angle. They provide a view of traffic, clearances, and students at the side of the bus. These mirrors present a view of people and objects that does not accurately reflect their size and distance from the bus.

You should position these mirrors to see:

  • The entire side of the bus up to the mirror mounts.
  • Front of the rear tires touching the ground.
  • At least one traffic lane on either side of the bus.
Convex Mirrors

Outside Left and Right-Side Crossover Mirrors

These mirrors are mounted on both left and right front corners of the bus. They are used to see the front bumper “danger zone” area directly in front of the bus that is not visible by direct vision, and to view the “danger zone” area to the left side and right side of the bus, including the service door and front wheel area. The mirror presents a view of people and objects that does not accurately reflect their size and distance from the bus. The driver must ensure that these mirrors are properly adjusted.

Ensure that the mirrors are properly adjusted so you can see:

  • The entire area in front of the bus from the front bumper at ground level to a point where direct vision is possible. Direct vision and mirror view vision should overlap.
  • The right and left front tires touching the ground.
  • The area from the front of the bus to the service door.
  • These mirrors, along with the convex and flat mirrors, should be viewed in a logical sequence to ensure that a child or object is not in any of the danger zones.
Crossover Mirrors

Overhead Inside Rearview Mirror

This mirror is mounted directly above the windshield on the driver’s side area of the bus. This mirror is used to monitor passenger activity inside the bus. It may provide limited visibility directly in back of the bus if the bus is equipped with a glass-bottomed rear emergency door. There is a blind spot area directly behind the driver’s seat as well as a large blind spot area that begins at the rear bumper and could extend up to 400 feet or more behind the bus. You must use the exterior side mirrors to monitor traffic that approaches and enters this area. You should position the mirror to see:

  • The top of the rear window in the top of the mirror.
  • All of the students, including the heads of the students right behind you.
Rearview Mirror