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CDL Practice Test: Pre-Trip Inspection

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CDL Practice Test: Pre-Trip Inspection

Pre-Trip Inspection Questions

Click On The Picture To Begin

Good Luck!

Can rims have welding repairs?
  • Yes, but the rim has to be replaced within 1 year of the weld being made
  • Yes, but any welds must be made by a certified mechanic
  • Yes, welding is allowed on rims
  • No, rims cannot have welding repairs
This is a question from page 83 - click here to look up the answer

Quote From Page 119 Of The Illinois CDL Manual:

Rims: Check for damaged or bent rims. Rims cannot have welding repairs.

TruckingTruth's Advice:

While inspecting a rim during your pre-trip exam, tell the examiner:

"I am checking the rim to make sure it is not cracked, bent, or broken and contains no welds."

Next
Which of these statements about checking the oil pressure gauge is correct?
  • After starting the engine, check that the pressure gauge shows increasing oil pressure
  • After starting the engine, check that the pressure gauge shows declining oil pressure
  • The pressure gauge should show normal pressure immediately after engine start
  • None of these answers are correct
This is a question from page 81 - click here to look up the answer

Quote From Page 117 Of The Illinois CDL Manual:

Oil pressure gauge:

  • Make sure oil pressure gauge is working.
  • Check that pressure gauge shows increasing or normal oil pressure or that the warning light goes off.
  • If equipped, oil temperature gauge should begin a gradual rise to the normal operating range.

TruckingTruth's Advice:

What to tell the examiner:

I'm checking the oil pressure gauge to make sure pressure is building to normal operating range.

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Next
Which statement about inspecting the steering box is incorrect?
  • Check for damaged hoses leading to the steering box
  • Make sure there is a small amount of steering fluid dripping from the bottom of the steering box
  • Look for any missing nuts, bolts, and cotter pins
  • All of these answers are correct
This is a question from page 83 - click here to look up the answer

Quote From Page 118 Of The Illinois CDL Manual:

Steering box/hoses:

  • Check that the steering box is securely mounted and not leaking. Look for any missing nuts, bolts and cotter keys.
  • Check for power steering fluid leaks or damage to power steering hoses.

TruckingTruth's Advice:

After pointing out the steering box and hoses, tell the examiner:

"I am making sure the steering box is properly mounted and secured, not cracked bent or broken, and not leaking fluid. I'm also making sure all the hoses are not damaged or leaking."

Prev
Next
Clearance lights must be:
  • Red on the front, amber elsewhere
  • Red only
  • Amber only
  • Red on the rear, amber elsewhere
This is a question from page 82 - click here to look up the answer

Quote From Page 118 Of The Illinois CDL Manual:

Lights/reflectors: Check that all external lights and reflective equipment are clean and functional. Light and reflector checks include:



       
  • Clearance lights (red on rear, amber elsewhere)

  •    
  • Headlights (high and low-beams); taillights

  •    
  • Turn signals

  •    
  • 4-way flashers

  •    
  • Brake lights

  •    
  • Red reflectors (on rear) and amber reflectors (elsewhere)



Note: Checks of brake turn signal and 4-way flasher functions must be done separately.

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Next
When checking the steering wheel, how much free play is allowed?
  • Play should not exceed 15 degrees
  • Play should not exceed 5 degrees
  • Play should not exceed 10 degrees
  • Play should not exceed 20 degrees
This is a question from page 81 - click here to look up the answer

Quote From Page 117 Of The Illinois CDL Manual:

Steering play:

  • Non-Power steering - Check for excessive play by turning steering wheel back and forth. Play should not exceed 10 degrees (or about 2 inches on a 20-inch wheel).
  • Power steering - With the engine running, check for excessive play by turning the steering wheel back and forth. Play should not exceed 10 degrees (or about 2 inches on a 20-inch wheel) before front left wheel barely moves.

TruckingTruth's Advice:

What to tell the examiner:

"The steering wheel has less than 10 degrees of free play, is not bent, broken, or cracked and is properly mounted and secured."

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Next
When inspecting suspension components, you must:
  • Check the components for every axle
  • Check the components on the trailer only
  • Check the components on the tractor only
  • Checking suspension components is not required
This is a question from page 83 - click here to look up the answer

Quote From Page 118 Of The Illinois CDL Manual:

Springs/air/torque:

  • Look for missing, shifted, cracked or broken leaf springs.
  • Look for broken or distorted coil springs.
  • If vehicle is equipped with torsion bars, torque arms or other types of suspension components, check that they are not damaged and are mounted securely.
  • Air ride suspension should be checked for damage and leaks.

Mounts:

Look for cracked or broken spring hangers, missing or damaged bushings and broken, loose or missing bolts, Ubolts or other axle mounting parts. (The mounts should be checked at each point where they are secured to the vehicle frame and axle(s)).

Shock absorbers:

Check that shock absorbers are secure and that there are no leaks.

Note: Be prepared to perform the same suspension components inspection on every axle (power unit and trailer, if equipped).

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Next
Do you need to test the horn during your pre-trip inspection?
  • Yes, but only the air horn has to function properly
  • Yes, both the electric horn and the air horn must be shown to work properly
  • Yes, but only the electric horn has to function properly
  • No, the horns do not need to be checked during a pre-trip inspection
This is a question from page 81 - click here to look up the answer

Quote From Page 117 Of The Illinois CDL Manual:

Horn:
Check that air horn and/or electric horn work.

TruckingTruth's Advice:

While laws vary from state to state, when taking your pre-trip exam, you should demonstrate that both the city (electric) horn and the air horn function properly. As you're demonstrating, here's what to say:

"I am now checking the city horn and the air horn to be sure they are both properly functioning."

This is one thing that many people forget to do when taking the pre-trip exam. Don't forget the horns!

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Next
What is the minimum amount of tread depth allowed on a steering axle?
  • 2/32-inch
  • 1/2-inch
  • 1-inch
  • 4/32-inch
This is a question from page 83 - click here to look up the answer

Quote From Page 119 Of The Illinois CDL Manual:

Tires: The following items must be inspected on every tire:

  • Tread depth - Check for minimum tread depth (4/32-inch on steering axle tires, 2/32-inch on all other tires).
  • Tire condition - Check that tread is evenly worn and look for cuts or other damage to tread or sidewalls. Also, make sure that valve caps and stems are not missing, broken or damaged.
  • Tire inflation - Check for proper inflation by using a tire gauge or by striking tires with a mallet or other similar device.

TruckingTruth's Advice:

When checking a steer tire, say to the examiner:

"I'm checking the steer tire to make sure the tread is evenly worn and there are no abrasions, bulges, or cuts to tread or sidewalls. The tread must have a minimum depth of 4/32 of an inch. The tires must be properly inflated according to factory specifications. Tire inflation on steer tires must be checked with a tire gauge."

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