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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 Missouri school bus test, and you must also pass skills tests in a school bus. The MO 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 Missouri CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this MO CDL practice test to prepare for the actual bus test!
1. How should you brake if your vehicle loses ABS?
Brake as you always have.
Pump the brake repeatedly
Step on and off the brake pedal several times
2. Properly adjusted mirrors on a school bus should allow the driver to see:
under the school bus.
the front tires touching the ground.
the sides of the school bus.
3. Buses must never carry:
small arms ammunition labeled ORM-D.
tear gas.
hospital supplies.
4. If a tire fails while you are driving, you should:
stop on the roadway if possible.
call your supervisor for instructions.
stay off the brake until your vehicle has slowed down.
5. At passive railroad crossings, even if there are active railroad signals that indicate the tracks are clear, you must _________  to be sure it is safe to proceed.
go, stop and listen
listen, look and stop
stop, look, and listen
6. Which of the following is NOT a warning sign of fatigue?
Frequent blinking
Driving at the speed of the traffic
Heavy eyelids
7. The overhead inside rearview mirror is:
mounted above the windshield on the driver's side area of the bus.
mounted on the left front corner of the bus.
located below the outside flat mirrors.
8. If your bus leans toward the outside on a banked curve, the bus:
is going too slow.
is going at the proper speed.
is going too fast.
9. 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.
10. When stopping to pick up students, the driver should park at least 10 feet away from the students. Why?
Because this forces the students to walk to the bus so the driver has a better view of their movements.
Because this forces the driver to watch the rear of the vehicle by looking out the side window.
Because this forces the students to cross the street to walk to the bus.
 
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MO CDL School Bus Test

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