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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 Arizona school bus test, and you must also pass skills tests in a school bus. The AZ 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 Arizona CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this AZ CDL practice test to prepare for the actual bus test!
1. How should you brake if your vehicle loses ABS?
Pump the brake repeatedly
Brake as you always have.
Step on and off the brake pedal several times
2. Buses must never carry:
emergency hospital supplies.
small arms ammunition labeled ORM-D.
irritating material.
3. When approaching a stopped school bus, drivers must be aware that:
students may start to get out of the bus.
the bus may suddenly start up and drive into your way.
All of the above.
4. When checking the bus seats, make sure that:
they are securely fastened to the bus.
they have not been damaged.
All of the above.
5. If the drive wheels begin to spin when accelerating, you should:
brake gently.
take your foot off the accelerator.
continue to accelerate.
6. Emergency roof hatches:
should be left opened as a regular practice.
may be partially opened for fresh air.
must never be opened while driving.
7. Before driving your bus, to be sure it's safe you should:
review the bus safety guidelines.
ask the shipper for the Safety Confirmation report.
review the inspection report made by the previous driver.
8. When driving in fog, drivers should:
use the windshield wipers.
use high beams.
use low beams.
9. Crossover mirrors are used to:
monitor the left and right sides of the bus at a wide angle.
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.
10. When changing lanes, you should check your mirrors:
After you complete the lane change.
Before you change lanes.
All of the above.
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AZ CDL School Bus Test

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