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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. If the drive wheels begin to spin when accelerating, you should:
take your foot off the accelerator.
brake gently.
continue to accelerate.
2. School bus drivers must check that the entry door is not damaged and:
operates smoothly and closes securely from the outside.
operates smoothly and closes securely from the inside.
trailer air connectors are sealed.
3. When checking tires, which of the following is not a problem?
4/32 inch tread depth on front tires
Cracked valve stems
Too much air pressure
4. When using outside left and right side flat mirrors, the blind spot behind the bus usually extends:
30 to 50 feet.
300 to 500 feet.
50 to 150 feet.
5. If the safety relief valve in the air brake system releases air:
this will supply more power to the brakes.
something is wrong.
the valve is fully operational.
6. If you experience a tire failure, do NOT:
stay off the brake (unless you're about to run into something).
hold the steering wheel firmly.
apply the brakes as hard as you can.
7. How does ABS help you?
ABS replaces your normal brakes and helps you  to stop faster.
ABS makes stab braking more effective.
ABS helps you avoid wheel lock up and maintain control when you brake hard on slippery surfaces.
8. At passive railroad crossings, even if there are active railroad signals that indicate the tracks are clear, you must _________  to be sure it is safe to proceed.
listen, look and stop
stop, look, and listen
go, stop and listen
9. When a tire suddenly blows out while you are driving, what should you do first?
Use controlled or stab braking.
Hold the steering wheel firmly and stay off the brakes.
Brake lightly and hold the steering wheel firmly.
10. When checking the bus seats, make sure that:
they are securely fastened to the bus.
they have not been damaged.
All of the above.
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ME CDL Bus Test

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