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To obtain a CDL, you will be required to pass a vehicle inspection test. The vehicle inspection test, formerly known as pre-trip, is a skills test to see if you identify which features and equipment on the test vehicle should be inspected before driving. During the test, you will be asked to do an inspection of your vehicle. You will be expected to show your knowledge of the inspection process and you will be tested to see if you know whether your vehicle is safe to drive. During the CDL inspection test, DMV does not allow the use of testing aids, other than the vehicle inspection guide in the Tennessee CDL Manual. To prepare for the test, study the following sections of the CDL manual: Driving Safely and the Vehicle Inspection Test. If you do not pass the CDL inspection test, the other skills tests will be postponed.
1. What should be fully engaged with no loose or missing pins in the slide mechanism of the sliding fifth-wheel?
Locking pins
Locking jaws
Hitch release lever
Sliding pintle
2. All CDL vehicle inspection tests include:
an in-cab inspection and background check.
an engine start and in-cab inspection.
an engine start and an inspection of the entire vehicle.
an engine inspection and tire check.
3. Rust trails around the lug nuts on the tires indicate that:
the tire hasn't been removed in some time.
the rim is defective.
the lugs may be loose.
All of the above.
4. If you find anything unsafe during the pre-trip inspection, you are required to:
write it in your inspection report.
drive cautiously until it is fixed.
get it fixed before driving.
inform your motor carrier after the trip.
5. If loose or missing, _______ may cause movement between the frame and fifth wheel assembly.
electric connectors
locking pins
safety chains
mounting bolts
6. If you are looking for puddles on the ground and dripping fluids on the underside of the engine and transmission, you are checking for:
Coolant level
Oil level
None of the above.
7. In the steering box part of the vehicle inspection test, you should:
check that the steering box is securely mounted.
check that the steering box is not leaking.
look for any missing nuts or bolts.
All of the above.
8. You pump the brake pedal three times, then hold it down for five seconds, making sure that the pedal does not move. You are checking:
the service brake.
the air brakes.
the hydraulic brakes.
the parking brake.
9. If you are checking that the air hoses and electrical lines are not spliced, cut, chafedĀ or worn, you are inspecting:
the exhaust system.
the air / electric lines.
the locking jaws.
the mounting bolts.
10. During the pre-trip inspection, belts should:
checked for leaks.
be checked for tightness and excessive wear.
not be inspected.
checked for oil pressure.
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TN CDL Inspection Test

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