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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 Wyoming school bus test, and you must also pass skills tests in a school bus. The WY 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 Wyoming CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this WY CDL practice test to prepare for the actual bus test!
1. When approaching an emergency vehicle stopped on the side of the road with lights flashing, you should:
move to the lane not next to that of the emergency vehicle.
speed up.
stay in the right lane.
yielding the right-of-way by coming to a complete stop.
2. Buses must never carry:
hospital supplies.
tear gas.
small arms ammunition labeled ORM-D.
drunk passengers.
3. The outside convex mirrors are located:
below the outside flat mirrors.
above the outside flat mirrors.
on top of the bus.
above the windshield on the driver's side area of the bus.
4. Rims with welding repairs:
are not safe.
are acceptable only when carrying a heavy load.
can be used for tires in the front of the vehicle.
can be used for tires in the rear of the vehicle.
5. Vehicles with ABS have ______ malfunction lamps on the bus’s instrument panel to tell you if something is not working.
6. Which of the following is NOT true?
ABS won't compensate for poor brake maintenance.
ABS won't compensate for bad brakes.
ABS only comes into play when a wheel would have locked up because of over braking.
ABS will change the way you normally brake.
7. If your bus gets stuck on a railroad track, the students:
should be evacuated and stand near the bus.
should remain on the bus.
should be evacuated and moved as far away from the tracks as possible.
None of the above.
8. Bus drivers:
are exempt from wearing a seat belt.
are required to wear a seat belt only when driving in construction zones.
must wear a seat belt at all times.
are required to wear a seat belt only when transporting passengers.
9. You hear a loud "bang" which sounds like a tire blowout. You should:
inspect your tires with your mirrors.
assume you have a tire failure.
keep driving as normal.
check the tires at the next stop.
10. Which of the following statements about fueling a bus with riders is true?
It should only be done during trips more than 150 miles long.
Before fueling your bus with riders on board you should tell passengers about the refueling.
Fueling your bus with riders on board should be avoided unless absolutely necessary.
All of the above.
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WY CDL Bus Test

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