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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 Tennessee school bus test, and you must also pass skills tests in a school bus. The TN 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 Tennessee CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this TN CDL practice test to prepare for the actual bus test!
1. When you are being tailgated, you should:
increase your following distance to create a buffer zone.
signal the tailgater when it's safe to pass you.
flash your brake lights.
All of the above.
2. How many drinks per hour can be handled by the liver?
About 4 drinks per hour.
About 3 drinks per hour.
About 2 drinks per hour.
About 1 drink per hour.
3. Students should board the bus:
three at a time.
without watching their step.
in single file.
two at a time.
4. Brakes out of adjustment can cause the other brakes to:
last longer.
apply more braking power.
work better.
overheat and fade.
5. When approaching an emergency vehicle stopped on the side of the road with lights flashing, you should:
move to the lane not next to that of the emergency vehicle.
yielding the right-of-way by coming to a complete stop.
speed up.
stay in the right lane.
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. If you doubt you have enough space to pass under a bridge, you should:
turn on your headlights.
go slowly.
turn on your 4-way emergency flashers.
drive faster.
8. If your bus has a manual transmission:
never change gears while crossing railroad tracks.
at a multiple-track crossing, stop only before the first set of tracks.
cross the railroad tracks in a low gear.
All of the above.
9. When students board, you should:
check all mirrors.
close the door.
count the number of mirrors.
announce the next stop.
10. Rims with welding repairs:
are not safe.
can be used for tires in the front of the vehicle.
are acceptable only when carrying a heavy load.
can be used for tires in the rear of the vehicle.
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TN CDL Bus Test

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