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The school bus endorsement applies to applicants who wish to drive a school bus in any Class A or B CDL. To add an S endorsement to your CLP/CDL, you must pass the Maine school bus test, and you must also pass skills tests in a school bus. The ME CDL bus test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The knowledge test covers the following sections of the Maine CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this ME CDL practice test to prepare for the actual bus test!
1. The safety valve is usually set to open at:
200 psi.
100 psi.
150 psi.
2. After an accident, an improper use of flares could cause:
air pressure to build from 50 to 100 psi within 2 minutes.
a fire if spilled fuel is on the ground.
the springs to put on the brakes.
3. ABS (Anti-lock Braking System):
is an addition to your normal brakes.
keeps your wheels from locking when you apply the brakes hard.
All of the above.
4. Crossover mirrors are used to:
monitor passenger activity inside the bus.
see the "danger zone" areas in front of the bus and to the left and right side of the bus.
monitor the left and right sides of the bus at a wide angle.
5. In vehicles with air brakes, the air compressor governor:
controls how much air the air compressor will pump into the air storage tanks.
controls when the air compressor will pump air into the air storage tanks.
controls when the air storage tanks will pump air into the air compressor.
6. ABS:
helps you increase your average speed.
does not decrease your stopping distance.
helps you increase your following distance.
7. If your bus gets stuck on a railroad track, you should:
keep students on the bus and contact your dispatcher to explain the situation.
lead students as far away from the tracks as possible, in the direction of any oncoming train.
lead students across the tracks, and have them stand at least 100 feet off tracks.
8. The brake and accelerator interlock system (if your bus has one):
is used to shut the air off and put on the trailer emergency brakes.
applies the brakes when the rear door is closed.
should never be used in place of the parking brake.
9. If a worker is close to the roadway in a work zone, you should:
reduce your speed below the posted speed limit.
pull off the road and stop.
drive at the posted speed limit.
10. When unloading students, you should:
have the students remain seated until told to exit.
invite the students to head toward the door while the bus is still moving.
get off the bus and stand right next to it.
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ME CDL School Bus Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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