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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 Colorado school bus test, and you must also pass skills tests in a school bus. The CO 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 Colorado CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this CO CDL practice test to prepare for the actual bus test!
1. Properly adjusted outside left and right side flat mirrors should allow the driver to see:
the front tires touching the ground.
the rear tires touching the ground.
at least 1 traffic lane on either side of the bus.
the front bumper.
2. The driver MUST evacuate the bus when:
there is an imminent danger of an accident.
the position of the bus may change and increase the danger.
there is a threat of a fire.
All of the above.
3. To know when to shift, you can use each of the following except:
engine speed.
road speed.
engine sounds.
perception distance.
4. Before driving your bus, make sure ________ do not have recapped or regrooved tires.
the spare wheels
the rear wheels
the front wheels
None of the above.
5. Regrooved tires:
cannot be used on the front wheels of buses.
cannot be used on the wheels of buses.
cannot be used on the rear wheels of buses.
None of the above.
6. When driving at night, to avoid glare from oncoming vehicles you should:
wear sunglasses.
put your own high beams on when other drivers do not put their low beams on.
look slightly to the right at a right lane or edge marking.
look directly at lights of oncoming vehicles.
7. Before leaving a bus stop, you should:
make sure no students are around or returning to the bus.
walk through the bus to check for sleeping students.
walk through the bus to check for items left by students.
walk through the bus and around the bus to look for open windows and doors.
8. After unloading at the school, you should walk through the bus to:
release the parking brake.
make sure no students are returning to the bus.
close the door.
to check for items left by students and hiding or sleeping students.
9. It is safer to drive over (rather than to avoid) which of the following?
Paper and cloth sacks
Cardboard boxes
Plastic containers
None of the above.
10. When arriving at a destination, it is best to tell passengers to take their carry-ons with them:
as they get off the bus.
after stopping.
before coming to a complete stop.
at least twice.
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CO CDL School Bus Test

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