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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 Washington school bus test, and you must also pass skills tests in a school bus. The WA 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 Washington CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this WA CDL practice test to prepare for the actual bus test!
1. Backing a school bus is:
strongly discouraged.
strongly encouraged.
always safe if you use caution.
2. ABS:
gives you more control when you brake.
is not required on newer trucks.
causes your wheels to lock when you break hard.
3. ABS malfunction lamps are located:
under the hood.
on the driver'door.
on the instrument panel.
4. When checking the bus seats, make sure that:
they have not been damaged.
they are securely fastened to the bus.
All of the above.
5. 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.
keep the students on the bus to maintain student safety and control.
evacuate the bus and lead the students as far away from railroad tracks as possible and in the direction of any oncoming train.
6. If you feel drowsy, you should _______ before driving.
drink coffee
7. You should NOT use the parking brakes if:
the brakes are too dry.
the brakes are cold.
the brakes are very hot.
8. When you are driving a school bus, the emergency exit doors or windows must always:
be closed.
have a red door light turned on.
None of the above.
9. School bus drivers should position the outside convex mirrors to see:
the right and left front tires touching the ground.
the front of the rear tires touching the ground.
the area from the front of the bus to the service door.
10. To ensure passenger safety during loading and unloading, bus drivers should:
always ensure that passengers are safely on the bus before closing the door(s).
allow passengers enough time to sit down or brace themselves before departing.
All of the above.
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WA School Bus Test

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