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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 Iowa 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. Signs of bad brake drums or shoes include the following except:
Shoes with brake fluid on them
Shoes with no oil on them
Cracked drums
2. Broken suspension parts can be very dangerous. When inspecting your vehicle for suspension system defects, look for:
Broken leaves in a multi-leaf spring.
Spring hangers that allow movement of axle from proper position.
All of the above.
3. To check the signal lights, do the following:
Turn off all the lights, turn on the right turn signal lights, and turn on the stop lights.
Turn on all the lights, turn off the stop lights, and turn off the left turn signal lights.
Turn off all the lights, turn on the stop lights, and turn on the left turn signal lights.
4. During the driving test, when approaching a railroad crossing, you should _________ while your vehicle is in the crossing.
not change gears
pass slow moving vehicles
change lanes
5. What should you do to test your vehicle's low air pressure warning signal?
With the engine running, put the vehicle in a forward gear and attempt to drive forward.
With the key in the "on" or "battery charge" position, rapidly apply and release the foot brake.
Pump the brakes until the air pressure drops below 80 psi.
6. During the vehicle inspection, make sure that the _____ is in the engaged position and that the safety latch is in place.
locking jaw
release arm
7. When checking the engine compartment:
the parking brake should be on.
wheels should not be chocked.
you should put the gearshift in neutral.
8. Pre-trip inspections of doubles and triples should:
take more time than inspecting straight trucks.
be done by the shipper.
take less time than inspecting straight trucks.
9. Key suspension system parts include:
Tie rod
Bearing plates
All of the above.
10. Which of the following is NOT a key part of the steering system?
Leaf spring
Gear box
Pitman arm
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IA CDL Inspection Test

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