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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 New Hampshire school bus test, and you must also pass skills tests in a school bus. The NH 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 New Hampshire CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this NH CDL practice test to prepare for the actual bus test!
1. The overhead inside rearview mirror is used to:
monitor the blind spot area directly behind the driver’s seat.
allow congested traffic to disperse.
monitor passenger activity inside the school bus.
perform a safe stop at designated unloading areas.
2. If the safety relief valve in the air brake system releases air:
this will supply more power to the drive wheels.
the valve is fully operational.
this will supply more power to the brakes.
something is wrong.
3. If your bus has a manual transmission, when crossing railroad tracks you should never:
use your brakes.
listen and look in both directions for trains.
change gears.
proceed carefully.
4. When stopping you should push the brake pedal down:
as hard as you can.
5. If the drive wheels begin to spin when accelerating, you should:
continue to accelerate.
take your foot off the accelerator.
set the parking brake.
brake gently.
6. If the school bus is equipped with a handicap lift, you should:
test what happens under braking conditions.
look for cracked drums.
look for bent, loose, or broken parts, such as tie rods.
look for damaged, leaking or missing parts and make sure that the lift is fully retracted and latched.
7. Emergency brakes must be held on by:
mechanical force.
air pressure.
hydraulic pressure.
dynamic pressure.
8. You are driving a school bus, When approaching a railroad crossing you should:
stop no closer than 5 feet from the tracks.
activate the 4-way emergency flashers.
cross the tracks in a high gear.
change lanes if possible.
9. When checking the bus seats, make sure that:
they are safe for riders.
they are securely fastened to the bus.
they have not been damaged.
All of the above.
10. When driving, you should check mirrors regularly to know where other vehicles are around you. Remember that:
you should check your after the start of any trip to make sure they are properly adjusted.
there are blind spots that your mirrors cannot show you.
convex mirrors make things look larger and closer than they really are.
every registered motor vehicle must have at least one mirror.
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NH CDL School Bus Test

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