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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 Idaho school bus test, and you must also pass skills tests in a school bus. The ID 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 Idaho CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this ID CDL practice test to prepare for the actual bus test!
1. If your bus is equipped with a roof-mounted strobe light, you should use it:
when you have limited visibility.
only in an emergency.
whenever possible.
2. ABS:
causes your wheels to lock when you break hard.
gives you more control when you brake.
is not required on newer trucks.
3. When unloading students along the school bus route:
Have the students remain seated until told to exit.
Count the number of students while unloading to confirm the location of all students before pulling away from the stop.
All of the above.
4. When approaching a traffic light that has been green for a long time, you should:
maintain your current speed.
speed up to get through the light.
start slowing down and be ready to stop.
5. Which of the following is not a rule for using turn signals?
Don't signal unless another vehicle is behind you
Cancel your signal after you have turned
Signal early
6. A passive railroad crossing is one that:
requires you to stop and wait until the traffic control device installed at the crossing tells you to proceed.
does not have any type of traffic control device.
has a traffic control device installed at the crossing to regulate traffic.
7. If your bus gets stuck on a railroad track, the students:
should remain on the bus.
should be evacuated and moved as far away from the tracks as possible.
should be evacuated and stand near the bus.
8. The safety valve is usually set to open at:
150 psi.
100 psi.
200 psi.
9. When stopping to pick up students, you should place the vehicle in:
10. Drivers should adjust their mirrors:
after driving.
while driving.
before driving.
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ID CDL Bus Test

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