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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 Delaware school bus test, and you must also pass skills tests in a school bus. The DE 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 Delaware CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this DE CDL practice test to prepare for the actual bus test!
1. You are driving a school bus, When approaching a railroad crossing you should:
cross the tracks in a high gear.
stop no closer than 5 feet from the tracks.
change lanes if possible.
activate the 4-way emergency flashers.
2. When inspecting the vehicle, make sure that:
if equipped, the stop arm is mounted  securely  to  the  frame  of  the  vehicle.
all emergency exits are not damaged.
all internal and external mirrors and mirror brackets are not damaged.
All of the above.
3. The area to the left of the bus is always considered dangerous because of:
blind spots.
passing pedestrians.
parked vehicles.
passing vehicles.
4. Carry-on baggage:
should not be left in the aisle.
must be left in the aisle.
may be left in the aisle.
None of the above.
5. When parked on the side of the road, you should:
flash your brake lights.
turn off all lights.
use the 4-way emergency flashers.
activate the right turn signal.
6. At railroad crossings, you must stop no closer than ___ feet and no farther than ___ feet from the nearest rail.
20; 40
25; 75
50; 100
15; 50
7. ABS helps you:
decrease your average speed.
keep the wheels from locking up.
decrease your overall stopping distance.
lock your wheels.
8. Students should board the bus:
in single file.
two at a time.
three at a time.
without watching their step.
9. Move-over laws require drivers to _________ when approaching an emergency vehicle stopped on the roadside or a work zone.
slow down and change lanes
change direction
sound their horn
10. Bus drivers:
are exempt from wearing a seat belt.
are required to wear a seat belt only when driving in construction zones.
are required to wear a seat belt only when transporting passengers.
must wear a seat belt at all times.
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DE School Bus CDL Test

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