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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 Wisconsin school bus test, and you must also pass skills tests in a school bus. The WI 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 Wisconsin CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this WI CDL practice test to prepare for the actual bus test!
1. Properly adjusted outside left and right side flat mirrors allow the school bus drivers to see _____ behind the bus.
50 feet
300 feet
200 feet
100 feet
2. Which of the following is NOT a warning sign of fatigue?
Heavy eyelids
Frequent blinking
Driving at the speed of the traffic
Trouble remembering the last few miles driven
3. You should NOT use the parking brakes if:
the brakes are too dry.
the brakes are cold.
the brakes are very hot.
All of the above.
4. At railroad crossings, you must stop no closer than ___ feet and no farther than ___ feet from the nearest rail.
15; 50
25; 75
50; 100
20; 40
5. When unloading the students, you must:
have the students remain seated until they are told to exit.
wait until all students are seated and facing forward before moving the bus.
tell students to exit the bus and walk behind the bus.
avoid counting the number of students while unloading, as this is a waste of precious time.
6. School bus drivers should position the outside convex mirrors to see:
the front of the rear tires touching the ground.
the top of the rear window.
the area from the front of the bus to the service door.
the right and left front tires touching the ground.
7. School buses are:
one of the fastest forms of transportation.
the slowest form of transportation.
one of the safest forms of transportation.
the most efficient vehicle on the road.
8. Buses must never carry:
radioactive materials.
small arms ammunition.
hospital supplies.
All of the above.
9. After unloading at the school, you should walk through the bus to:
close the door.
release the parking brake.
to check for items left by students and hiding or sleeping students.
make sure no students are returning to the bus.
10. When driving, you should check mirrors regularly to know where other vehicles are around you. Remember that:
you should check your after the start of any trip to make sure they are properly adjusted.
convex mirrors make things look larger and closer than they really are.
there are blind spots that your mirrors cannot show you.
every registered motor vehicle must have at least one mirror.
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WI School Bus Test

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