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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. When a school bus is stalled on a railroad-highway crossing, the driver should:
evacuate the bus and lead the students upwind of the bus.
evacuate the bus and lead the students as far away from railroad tracks as possible and in the direction of any oncoming train.
keep the students on the bus to maintain student safety and control.
2. Why should you back toward the driver's side?
You can more easily correct any steering errors.
You can see better and watch the rear of your vehicle by looking out the side window.
All of the above.
3. When checking the bus seats, make sure that:
they have not been damaged.
they are securely fastened to the bus.
All of the above.
4. If there is a serious behavior problem on the bus, you should:
stop the bus in a safe location off the road, secure the bus and remind the offender of the expected behavior.
ask the student to move to the back of the bus and be respectful of others.
pull the bus over and put the student off the bus.
5. Select the best answer. Before operating the school bus, you should always:
check the left mirror.
check each mirror.
check the right mirror.
6. The brake and accelerator interlock system (if your bus has one):
is used to shut the air off and put on the trailer emergency brakes.
should never be used in place of the parking brake.
applies the brakes when the rear door is closed.
7. ABS (Anti-lock Braking System):
keeps your wheels from locking when you apply the brakes hard.
is an addition to your normal brakes.
All of the above.
8. When unloading students, you should:
get off the bus and stand right next to it.
invite the students to head toward the door while the bus is still moving.
have the students remain seated until told to exit.
9. You should adjust outside mirrors:
before a trip begins.
while students get on the bus.
during a trip.
10. Before leaving a bus stop, you should:
walk through the bus to check for items left by students.
walk through the bus to check for sleeping students.
make sure no students are around or returning to the bus.
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ID CDL School 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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