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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Tennessee CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Tennessee CDL Manual. Take this practice test now to prepare for the actual TN CDL combination test!
1. Fully loaded rigs:
are just as likely to roll over as empty rigs.
are less likely to roll over than empty rigs.
are much more likely to roll over than empty rigs.
None of the above.
2. You are checking the tractor-trailer connection to make sure it is safe and secure. The landing gear should be:
raised slightly off the ground.
fully raised.
fully lowered.
None of the above.
3. If you get stuck on railroad tracks, you should:
have a helper push your vehicle.
get out of the vehicle and away from the tracks.
stay in the vehicle and call for help.
check the engine compartment quickly.
4. Broken suspension parts can be very dangerous. When inspecting your vehicle for suspension system defects, look for:
Spring hangers that allow movement of axle from proper position.
Damaged air suspension systems.
Broken leaves in a multi-leaf spring.
All of the above.
5. In a vehicle with a dual air brake system:
one system supplies air to the trailer.
each system has its own air tanks.
both systems typically operate the regular brakes on the rear axle.
All of the above.
6. To avoid rollovers, you should drive slowly:
around corners.
off ramps.
on ramps.
All of the above.
7. To prevent rollover, you should:
drive on the shoulder of the road when possible.
drive in the left lane.
drive slowly around corners.
turn the engine off while turning.
8. When you have to back, you should always try to back toward the driver's side. Why?
Backing toward the left side is more dangerous.
You can watch the front of your vehicle by looking out the side window.
You can see better and watch the rear of your vehicle by looking out the side window.
All of the above.
9. If your vehicle catches fire, you should pull over:
near trees.
in an open area.
at a service station.
near other vehicles.
10. After coupling the trailer, begin raising the landing gear by using:
the high gear range.
the low gear range.
the electrical cord.
the crank handle.
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TN CDL Combination Test

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