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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 Illinois 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. When inspecting your vehicle, before checking the engine compartment be sure that:
all tires are properly inflated.
the parking brakes are on and/or wheels chocked.
the fire extinguisher is properly charged and rated.
all lights are working.
2. Signs of bad brake drums or shoes include the following except:
Shoes with no oil on them
Shoes with brake fluid on them
Cracked drums
Shoes worn thin
3. Rust trails around the lug nuts on the tires indicate that:
the lugs may be loose.
the rim is defective.
the tire hasn't been removed in some time.
All of the above.
4. Exhaust system parts should be:
rubbing against fuel system parts.
None of the above.
5. Which of the following is NOT a tire problem to look for during the vehicle inspection?
Cracked valve stems
All the tires are made by the same manufacturer
Radial and bias-ply tires used together
Recapped tires on the front of a school bus
6. If the coolant container is not part of the pressurized system:
you can safely remove the cap and add coolant even when the engine is hot.
you should remove the container cap and wait until the system has cooled.
you should never remove the radiator cap or any part of the pressurized system until the system has cooled.
None of the above.
7. During the pre-trip inspection, belts should:
not be inspected.
be checked for tightness and excessive wear.
checked for leaks.
checked for oil pressure.
8. Checking the automatic transmission fluid level may require:
the vehicle to be parked downhill.
the engine to be running.
the 4-way emergency flashers to be activated.
you to pump the brake.
9. Name some exhaust system parts.
Main spring, axle and font axle hanger
Drag link, spindle and gear box
Pitman arm, hydraulic fluid reservoir and tie rod
Mufflers, mounting brackets and vertical stacks
10. Which of the following is NOT a key part of the steering system?
Pitman arm
Leaf spring
Tie rod
Gear box
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IL CDL Inspection Test

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