CDL Practice Tests: Pre-Trip Inspection

Choose A Section:

Go!
Question #524 (1 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

What are two indications of loose lug nuts?

  • Rusty trails or shiny threads
  • Low hub oil level or brakes squeaking
  • Twisted or bent valve stem and over-inflated tires
  • All these are correct
Check that all lug nuts are present, free of cracks and distortions and show no signs of looseness such as rust trails or shiny threads.
Previous Next
Question #512 (2 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

When doing an emergency system check on air brake systems, how do you begin the test?

  • Turn electrical power on and begin fanning off the air pressure by rapidly applying and releasing the foot brake
  • Turn electrical power off and begin fanning off the air pressure by pulling out the red parking brake knob
  • Turn electrical power off and begin fanning off the air pressure by rapidly applying and releasing the foot brake
  • Turn the engine on and begin fanning off the air pressure by rapidly applying and releasing the foot brake
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).
Previous Next
Question #521 (3 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

What is the minimum tire tread depth allowed during a pre-trip inspection?

  • 2/32 on steering axle tires and 4/32 on all other tires
  • 4/32 on drive axle tires and 2/32 on all other tires
  • 4/32 on steering axle tires and 2/32 on all other tires
  • 4/32 on trailer axle tires and 2/32 on all other 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.
Previous Next
Question #526 (4 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

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.
Previous Next
Question #505 (5 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

When doing a pre-trip inspection, which of the following is NOT one of the required pieces of emergency equipment you must have?

  • Three red reflective triangles, six fuses or three liquid burning flares.
  • A properly charged and rated fire extinguisher
  • Spare electrical fuses, unless circuit breaker equipped vehicle.
  • A basic tool kit

Emergency Equipment

  • Check for spare electrical fuses, unless circuit breaker equipped vehicle.
  • Check for three red reflective triangles, six fuses or three liquid burning flares.
  • Check for a properly charged and rated fire extinguisher.
Previous Next
Question #509 (6 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

Which is the proper procedure for checking hydraulic brakes?

  • Hold the brake pedal down. Make sure the pedal slowly moves all the way to the floor within 10 seconds
  • Pump the brake three times and watch the hydraulic pressure gauge to make sure it's building pressure
  • All these are correct
  • 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.

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.
Previous Next
Question #508 (7 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

Which is the proper procedure for checking the trailer parking brakes?

  • Measure the distance between the parking brake shoe and the drum. Make sure it is less than 1 inch
  • Check the angle of the S-cam coming out of the brake chamber
  • All these are correct
  • Gently trying to pull forward with the trailer parking brake on
Trailer (if applicable): With the tractor parking brake released and the trailer parking brake engaged (combination vehicles only), check that the trailer parking brake will hold the vehicle by gently trying to pull forward with the trailer parking brake on.
Previous Next
Question #527 (8 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

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
  • None of these are correct
  • Emergency flares and flashlight
  • Tool kit and tire patching kit

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
Previous Next
Question #507 (9 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

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

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

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.
Previous Next
Question #516 (10 of 10)

Give a brief explanation of the problem:

Optional: Leave your email address if you would like a reply:

Report Cancel

What do you check for with the safety belt during a pre-trip inspection?

  • The belt is securely mounted
  • All these are correct
  • The belt adjusts and latches properly
  • The belt is not ripped or frayed
Check that the safety belt is securely mounted, adjusts and latches properly, and is not ripped or frayed.
Previous Next
Complete!

Choose your next section:

Go!

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.

Why Join Trucking Truth?

We have an awesome set of tools that will help you understand the trucking industry and prepare for a great start to your trucking career. Not only that, but everything we offer here at TruckingTruth is 100% free - no strings attached! Sign up now and get instant access to our member's section:
High Road Training Program Logo
  • The High Road Training Program
  • The High Road Article Series
  • The Friendliest Trucker's Forum Ever!
  • Email Updates When New Articles Are Posted

Apply For Paid CDL Training Through TruckingTruth

Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? Seriously! The application only takes one minute. You will speak with recruiters today. There is no obligation whatsoever. Learn more and apply here:

Apply For Paid CDL Training