CDL Practice Tests: Pre-Trip Inspection

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Question #519 (1 of 10)

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For manual slack adjustors, the brake pushrod should not move more than _________ (with the brakes released) when pulled by hand.

  • 6 inches
  • 1 inch
  • 1 foot
  • 2 inches
For manual slack adjustors, the brake pushrod should not move more than 1 inch (with the brakes released) when pulled by hand.
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Question #517 (2 of 10)

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

  • 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
  • All these are correct

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 #509 (3 of 10)

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Which is the proper procedure for checking hydraulic brakes?

  • Pump the brake three times and watch the hydraulic pressure gauge to make sure it's building pressure
  • Pump the brake pedal three times and then hold it down for five seconds. The brake pedal should not move (depress) during the five seconds.
  • Hold the brake pedal down. Make sure the pedal slowly moves all the way to the floor within 10 seconds
  • All these are correct

Hydraulic Brake Check (if equipped)

  • Pump the brake pedal three times and then hold it down for five seconds. The brake pedal should not move (depress) during the five seconds.
  • If equipped with a hydraulic brake reserve (back-up) system, with the key off, depress the brake pedal and listen for the sound of the reserve system electric motor.
  • Check that the warning buzzer or light is off.
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Question #530 (4 of 10)

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Make sure there is no gap between the landing gear foot and the trailer apron

  • Make sure the brake fluid lines are properly attached and not leaking
  • Make sure there are no missing parts
  • Make sure the crank handle is secured and the support frame is not damaged
  • Check that the landing gear is fully raised
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 #525 (5 of 10)

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

  • Battery box and cover or door must be secure
  • Battery connections should not show signs of excessive corrosion
  • 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 #504 (6 of 10)

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Which of the following is NOT one of the belts you will check during a pre-trip inspection of the engine compartment?

  • Power steering belt
  • Alternator belt
  • Water pump belt
  • Camshaft belt

Check the following belts for snugness (up to 1/4-inch play at center of belt), cracks or frays:

  • Power steering belt.
  • Water pump belt.
  • Alternator belt.
  • Air compressor belt.
The camshaft is inside the engine and does not have a belt you can see or check.
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Question #528 (7 of 10)

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In addition to checking the lighting indicators listed in Section 10.2 of this manual, school bus drivers must also check which of the following lighting indicators:

  • Strobe light indicator, if equipped.
  • Alternately flashing red lights indicator.
  • All these are correct
  • Alternately flashing amber lights indicator, if equipped.

In addition to checking the lighting indicators listed in Section 10.2 of this manual, school bus drivers must also check the following lighting indicators (internal panel lights):

  • Alternately flashing amber lights indicator, if equipped.
  • Alternately flashing red lights indicator.
  • Strobe light indicator, if equipped.
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Question #518 (8 of 10)

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

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

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 #526 (9 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?

  • 1 inch
  • 1/4 inch
  • No less than 2 inches
  • 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 #515 (10 of 10)

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Describe the proper service brake check:

  • Pull forward at 5 mph, apply the service brake and stop. Check to see that the vehicle does not pull to either side and that it stops when the brake is applied
  • All of these are correct
  • While sitting still, release the parking brake and pump the service brake 5 times, then release it. Make sure the pressure does not drop more than 3 psi in one minute
  • Pull forward at 5 mph, apply the emergency brake and stop. Check to see that the vehicle does not pull to either side and that it stops when the emergency brake is applied

Service Brake Check

  • You will be required to check the application of air or hydraulic service brakes. This procedure is designed to determine that the brakes are working correctly and that the vehicle does not pull to one side or the other.
  • Pull forward at 5 mph, apply the service brake and stop. Check to see that the vehicle does not pull to either side and that it stops when the brake is applied.
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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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