CDL Practice Tests: Pre-Trip Inspection

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Question #525 (1 of 10)

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When doing a pre-trip inspection, what should you check on the battery box?

  • Battery connections should not show signs of excessive corrosion
  • Battery box and cover or door must be secure
  • All these are correct
  • Battery(s) are secure, connections are tight and cell caps are present

Battery/Box

  • Wherever located, see that battery(s) are secure, connections are tight and cell caps are present.
  • Battery connections should not show signs of excessive corrosion.
  • Battery box and cover or door must be secure.
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Question #526 (2 of 10)

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When doing a pre-trip inspection, how much of a gap should there be between the 5th wheel and the trailer?

  • No less than 2 inches
  • 1 inch
  • 1/4 inch
  • No gap
Make sure there is no gap between the fifth-wheel and trailer, and check that locking jaws are fully closed around the kingpin.
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Question #530 (3 of 10)

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What should you check for when checking the landing gear on the trailer?

  • Check that the landing gear is fully raised
  • Make sure there are no missing parts
  • Make sure the crank handle is secured and the support frame is not damaged
  • All of these are correct
Check that the landing gear is fully raised, has no missing parts, crank handle is secure and the support frame is not damaged.
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Question #527 (4 of 10)

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In addition to checking for spare electrical fuses (if equipped), three red reflective triangles and a properly charged and rated fire extinguisher, school bus drivers must also inspect which of the following emergency equipment?

  • First aid kit and body fluid cleanup kit
  • Emergency flares and flashlight
  • Tool kit and tire patching kit
  • None of these are correct

In addition to checking for spare electrical fuses (if equipped), three red reflective triangles and a properly charged and rated fire extinguisher, school bus drivers must also inspect the following emergency equipment:

  • First Aid Emergency Kit
  • Body Fluid Cleanup Kit
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Question #517 (5 of 10)

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When checking the steering box components under the hood, what should you check for?

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

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.
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Question #507 (6 of 10)

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Which of the following is NOT one of the dash indicators you will look for during your pre-trip inspection?

  • Four-way emergency flashers
  • Antilock Braking System (ABS) indicator
  • Air lines reversed indicator
  • Left turn signal indicator

Test that dash indicators work when corresponding lights are turned on:

  • Left turn signal
  • Right turn signal.
  • Four way emergency flashers.
  • High-beam headlight.
  • Antilock Braking System (ABS) indicator.
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Question #513 (7 of 10)

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When doing an emergency system check on air brake systems, the low air warning device (buzzer, light, other) should activate when the pressure gets below what reading?

  • 100 psi
  • 60 psi
  • 80 psi
  • 140 psi
Emergency System Check. Turn electrical power on and begin fanning off the air pressure by rapidly applying and releasing the foot brake. Low air warning devices (buzzer, light, other) should activate before air pressure drops below 60 psi. Continue to fan off the air pressure. Normally within the range of 20-45 psi on a tractor-trailer combination vehicle, the tractor parking valve, and parking brake valve should close (pop out). On other combination vehicle types and single vehicle types, the parking brake valve should close (pop out).
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Question #518 (8 of 10)

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When checking the suspension components, what should you check for?

  • Look for broken or distorted coil springs.
  • Air ride suspension should be checked for damage and leaks.
  • All these are correct
  • Look for missing, shifted, cracked or broken leaf springs.

Suspension 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.
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Question #506 (9 of 10)

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When doing a pre-trip inspection of the power steering, play in the steering wheel should not exceed how much?

  • There should be zero degrees of play in the steering wheel
  • 10 degrees (or about 2 inches on a 20-inch wheel) before the front left wheel barely moves.
  • 30 degrees (or about 6 inches on a 20-inch wheel) before the front left wheel barely moves.
  • 20 degrees (or about 4 inches on a 20-inch wheel) before the front left wheel barely moves.
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 the front left wheel barely moves.
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Question #523 (10 of 10)

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Re-grooved or re-capped tires are not permitted on:

  • Steer tires
  • Any tires
  • Drive tires
  • Trailer tires

The following items must be inspected on every tire:

  • Tread depth: Check for minimum tread depth (4/32 on steering axle tires and 2/32 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 a mallet. Note: You will not get credit if you simply kick the tires to check for proper inflation.
  • That there is no mismatch tires (size and construction).
  • Re-grooved or re-capped tires are not permitted on bus steer tires.
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About The Pre-Trip Inspectin CDL Exam

The The Pre-Trip Inspectin portion of the CDL Exam is required to obtain your CDL. During the pre-trip inspection, you must show that the vehicle is safe to drive. You may have to walk around the vehicle and point to or touch each item and explain to the examiner what you are checking and why. You will NOT have to crawl under the hood or under the vehicle.

Drivers need to have knowledge of how the actual vehicle(s) that they are conducting the test in operate. The drivers need to be able to explain and demonstrate different checks for the examiner as requested.

Taking the CDL Pre-trip Inspection Test

Class A Pre-trip Inspection Test

If you are applying for a Class A CDL, you will be required to perform a pre-trip inspection in the vehicle you have brought with you for testing. The vehicle must be a combination vehicle, representative of the unit you will be driving and must meet the class weight requirements. If the vehicle is an air brake vehicle, you must first pass the air brake knowledge test. You also must have passed all applicable endorsement knowledge tests that pertain to the vehicle you bring in for testing. Your test will require an inspection of the areas of the vehicle as instructed by your CDL examiner.

Class B and C Pre-trip Inspection Test

If you are applying for a Class B or C CDL, you will be required to perform a pre-trip inspection in the vehicle you have brought with you for testing. The vehicle must be a straight truck, passenger bus or school bus, representative of the vehicle you will be driving and must meet the class weight requirements. If the vehicle is an air brake vehicle, you must first pass the air brake knowledge test. You also must have passed all applicable endorsement knowledge tests that pertain to the vehicle you bring in for testing. Your test will require an inspection of the areas of the vehicle as instructed by your CDL examiner.

TruckingTruth's Pre-Trip Inspection Study Guide

We have an excellent Pre-trip Inspection Study Guide which includes a complete pre-trip inspection with photos and descriptions, numerous pre-trip inspection videos, and a complete vehicle checklist.

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