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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. When students unload the bus, they should:
walk at least 10 feet away from the bus.
stand at the side of the bus.
walk along the side of the bus.
stop and help the driver supervise the unloading process.
2. You should adjust outside mirrors:
while students get off the bus.
before a trip begins.
while students get on the bus.
during a trip.
3. Crossover mirrors are used to:
monitor traffic.
monitor the left and right sides of the bus at a wide angle.
see the "danger zone" areas in front of the bus and to the left and right side of the bus.
monitor passenger activity inside the bus.
4. If you are driving a school bus, the 4-way emergency flashers should:
be activated after crossing railroad tracks.
never be used.
be used only when a train is approaching.
be activated before crossing railroad tracks.
5. When you need to brake, you should warn the drivers behind:
by turning on the 4-way emergency flashers.
by making gestures.
by flashing your brake lights.
by changing lanes.
6. Antifreeze:
helps the engine only under hot conditions.
helps the engine only when the temperature is below freezing.
doesn't help the engine in any way.
helps the engine under hot conditions as well as cold conditions.
7. If you lose ABS control on one or more wheels, you should:
drive normally (you still have regular brakes), but get the system serviced soon.
immediately report it to the motor carrier.
stop braking and countersteer.
fully apply the brakes until you stop.
8. If you hear a loud loud "bang" and the steering feels "heavy", you should:
hold the steering wheel firmly and stay off the brake.
brake hard and pull off the road.
pump the brakes until the vehicle has slowed down.
check your rearview mirrors to see if you have a flat tire.
9. The standee line is:
is a line that passengers must stand on.
a line on the floor of the bus showing riders where the driver cannot stand.
a line on the floor of the bus showing the driver where the riders cannot stand.
a line on the floor of the bus showing riders where they cannot stand.
10. The overhead inside rearview mirror is used to:
monitor passenger activity inside the school bus.
allow congested traffic to disperse.
monitor the blind spot area directly behind the driver’s seat.
perform a safe stop at designated unloading areas.
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DC School Bus Test

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