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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 South Dakota school bus test, and you must also pass skills tests in a school bus. The SD 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 South Dakota CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this SD CDL practice test to prepare for the actual bus test!
1. If driving a charter bus, you should:
allow passengers on the bus early.
explain the passenger comfort and safety rules while driving.
tell passengers to fill the back of the bus first.
not allow passengers on the bus until departure time.
2. When approaching a stopped school bus, drivers must be aware that:
students may start to get out of the bus.
the bus may suddenly start up and drive into your way.
passengers may cross in front of or behind the bus.
All of the above.
3. When unloading students at the school, you should:
secure the bus by turning off the ignition switch.
close the door and release the parking brake.
have the students stand until told to exit.
leave the driver's compartment and keeping the key in the ignition.
4. You must have at least _____ inch tread depth in every major groove on front tires.
5. Antifreeze:
helps the engine only under hot conditions.
doesn't help the engine in any way.
helps the engine only when the temperature is below freezing.
helps the engine under hot conditions as well as cold conditions.
6. When loading and unloading students, drivers of a school bus should check their mirrors:
After closing the door.
After extending the stop arm.
After entering the traffic.
7. When a tire suddenly blows out while you are driving, what should you do first?
Brake lightly and hold the steering wheel firmly.
Use the parking brake.
Use controlled or stab braking.
Hold the steering wheel firmly and stay off the brakes.
8. Rough acceleration:
improves gas mileage.
is necessary to warm up the engine.
can cause mechanical damage.
is recommended during long trips.
9. If you hear a loud loud "bang" and the steering feels "heavy", you should:
brake hard and pull off the road.
hold the steering wheel firmly and stay off the brake.
check your rearview mirrors to see if you have a flat tire.
pump the brakes until the vehicle has slowed down.
10. 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.
listen, look and stop
go, look and put the transmission in neutral
stop, look, and listen
go, stop and listen
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SD CDL Bus Test

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