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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 North Carolina school bus test, and you must also pass skills tests in a school bus. The NC 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 North Carolina CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this NC CDL practice test to prepare for the actual bus test!
1. Rough acceleration:
is recommended during long trips.
is necessary to warm up the engine.
improves gas mileage.
can cause mechanical damage.
2. If the drive wheels begin to spin, you should:
apply your brakes all the way.
accelerate smoothly and change gears as necessary.
wait 4-5 seconds before applying the accelerator.
take your foot off the accelerator.
3. You should adjust the outside left and right side crossover mirrors so you can see:
the right and left front tires touching the ground.
along the sides of the bus.
200 feet behind the bus.
the front of the rear tires touching the ground.
4. When crossing railroad tracks, you should:
apply the parking brakes.
stay in your lane.
stop on the tracks.
shift gears while crossing the tracks.
5. In an emergency:
you should never turn to miss an obstacle.
stopping is not always the safest thing to do.
stopping is always the best thing to do.
you should keep one hand on the steering wheel.
6. If you lose ABS control on one or more wheels, you should:
immediately report it to the motor carrier.
drive normally (you still have regular brakes), but get the system serviced soon.
fully apply the brakes until you stop.
stop braking and countersteer.
7. Brakes out of adjustment can cause the other brakes to:
work better.
last longer.
overheat and fade.
apply more braking power.
8. If you hear a loud loud "bang" and the steering feels "heavy", you should:
check your rearview mirrors to see if you have a flat tire.
pump the brakes until the vehicle has slowed down.
hold the steering wheel firmly and stay off the brake.
brake hard and pull off the road.
9. After an accident, an improper use of flares could cause:
a fire if spilled fuel is on the ground.
the springs to put on the brakes.
the vehicle to slide back and forth.
air pressure to build from 50 to 100 psi within 2 minutes.
10. The blind spot for outside left and right side flat mirrors is:
above each mirror.
behind each mirror.
to the left of each mirror.
immediately below and in front of each mirror.
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NC CDL School Bus Test

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