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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 railroad crossings, you should stop your bus between _______ feet before the crossing.
15 and 50
10 and 200
30 and 80
5 and 10
2. When using outside left and right side flat mirrors, the blind spot behind the bus usually extends:
300 to 500 feet.
10 to 50 feet.
50 to 150 feet.
30 to 50 feet.
3. When boarding the bus, students should:
not use the handrail.
be in single file.
be quick.
be in pairs.
4. The overhead inside rearview mirror:
is mounted above the windshield on the driver’s side area of the bus.
may provide limited visibility in the back of the bus if the bus is equipped with a glass-bottomed rear emergency door.
is used to monitor passenger activity inside the bus.
All of the above.
5. Road surfaces where water collects can create conditions that cause a vehicle to hydroplane. Which of the following is an indication of standing water?
Tire splashes
Raindrops on the road
Clear reflections
All of the above.
6. You should use the overhead inside rearview mirror to:
see what is happening on the bus.
to monitor the left and right sides of the bus at a wide angle.
see the front bumper "danger zone" area in front of the bus.
to monitor traffic and check clearances.
7. When inspecting the vehicle, make sure that:
all internal and external mirrors and mirror brackets are not damaged.
if equipped, the stop arm is mounted  securely  to  the  frame  of  the  vehicle.
all emergency exits are not damaged.
All of the above.
8. If a student is believed to have suffered a neck or spinal injury, you should:
move the student as far away from the bus as possible.
move the student off the bus.
not move the student.
stay as far away from the student as possible.
9. A school bus driver must evacuate the bus when:
the ABS is not working properly.
you have pull off the road and stop.
the bus is stalled on a railroad crossing.
the bus is stalled on the shoulder of a 4-lane divided highway and it's snowing.
10. Backing a school bus is:
strongly encouraged.
usually encouraged.
strongly discouraged.
always safe if you use caution.
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WY School Bus CDL Test

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