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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 District of Columbia school bus test, and you must also pass skills tests in a school bus. The DC 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 District of Columbia CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this DC CDL practice test to prepare for the actual bus test!
1. If a student drops something in front of the bus, the student should:
ask the driver to retrieve the item.
pick up the object as quickly as possible.
leave the item where it fell, and get the driver's attention and permission to retrieve the item.
leave the item behind.
2. Bus drivers:
are required to wear a seat belt only when driving in construction zones.
must wear a seat belt at all times.
are required to wear a seat belt only when transporting passengers.
are exempt from wearing a seat belt.
3. To know if your vehicle is equipped with ABS, look for:
the ABS shipping paper.
a yellow ABS malfunction lamps on the instrument panel.
the ABS logo on the steering wheel.
an ABS placard.
4. If the ABS is not working:
you still have normal brake functions.
the vehicle will have weak brakes.
the vehicle will have no brakes.
None of the above.
5. If driving a new vehicle, you should familiarize yourself with the controls and equipment:
within the first 50 miles.
after pulling into a service station.
as you drive.
before you start driving.
6. When approaching the bus stop, you should activate the lights approximately _______ before the bus stop.
15 seconds
5-10 seconds
25 seconds
4-6 seconds
7. When driving on slippery roads, you should NOT:
use the engine brake.
try to anticipate stops early.
watch far enough ahead to keep a steady speed.
go slowly.
8. The driver's seat of a bus should have:
a seat belt.
a pocket for storage.
a brake and accelerator interlock system.
an emergency exit handle.
9. What should you do if your vehicle starts hydroplaning?
Apply the brakes and countersteer to regain control of the vehicle.
Release the accelerator and push in the clutch to let the wheels turn freely.
Leave the road completely.
Accelerate slightly, then push in the clutch to slow down.
10. One way to prevent hydroplaning is to:
have less than 4/32 inch tread depth in every major groove on front tires.
use the controlled braking method.
take curves at higher speeds.
make sure you have enough tread on your tires.
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DC CDL School Bus Test

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