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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. Road surfaces where water collects can create conditions that cause a vehicle to hydroplane. Which of the following is an indication of standing water?
Raindrops on the road
Clear reflections
Tire splashes
All of the above.
2. The driver's seat of a bus should have:
a brake and accelerator interlock system.
an emergency exit handle.
a pocket for storage.
a seat belt.
3. If your bus has a manual transmission, when crossing railroad tracks you should never:
change gears.
use your brakes.
proceed carefully.
listen and look in both directions for trains.
4. School bus drivers should position the outside convex mirrors to see:
the top of the rear window.
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.
5. Which of the following road surfaces freezes first?
Open roads
6. If ABS is not working:
you will still have brakes.
you will not have any brakes.
you should use the parking brake.
you should use the emergency brake.
7. When driving a school bus in strong winds, you should:
Keep a strong grip on the steering wheel and try to anticipate gusts.
Avoid pulling off the road to wait.
Speed up to get away from the wind as quickly as possible.
All of the above.
8. If a rider wants to board the bus with a car battery, the bus driver should:
call the police.
instruct the rider to sit next to the exit doors.
inspect the battery before allowing the rider to carry it on board.
not allow the rider to carry on the battery.
9. Baggage and freight should be secured in a way that:
allows riders to easily identify their baggage before they get off the bus in an emergency.
allows riders to exit by any window or door in an emergency.
allows riders to quickly take their baggage with them in an emergency.
blocks one exit, but allows riders to exit by any remaining window or door in an emergency.
10. When inspecting your bus, make sure that:
emergency exit handles are in safe working condition.
signaling devices are working.
seats are safe for riders.
all of the above have been checked.
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SD School Bus Test

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