CDL Practice Tests: Pre-Trip Inspection

Choose A Section:

Go!
Question #506 (1 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 of the power steering, play in the steering wheel should not exceed how much?

  • 10 degrees (or about 2 inches on a 20-inch wheel) before the front left wheel barely moves.
  • There should be zero degrees of play in the steering wheel
  • 20 degrees (or about 4 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.
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.
Previous Next
Question #503 (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 a pre-trip inspection of the engine compartment, which of the following are you NOT looking for?

  • Inspect hoses for condition and leaks.
  • Look for puddles on the ground.
  • Make sure the air lines are properly attached to the trailer
  • Look for dripping fluids on the underside of the engine and transmission.

Engine Compartment (Engine Off) Leaks/Hoses

  • Look for puddles on the ground.
  • Look for dripping fluids on underside of engine and transmission.
  • Inspect hoses for condition and leaks.
The air lines do not connect to the trailer inside the engine compartment.
Previous Next
Question #514 (3 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, the tractor parking valve and the trailer parking valve should close (pop out) when the pressure gets below what reading?

  • 60-80 psi
  • 80 - 100 psi
  • 20-45 psi
  • 10-30 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 the trailer parking 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 #502 (4 of 10)

Give a brief explanation of the problem:

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

Report Cancel

During the pre-trip inspection test you must:

  • Walk around the vehicle and point to or touch each item
  • All these are correct
  • Show that the vehicle is safe to drive
  • Explain to the examiner what you are checking and why
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. At the time of your test, the examiner will direct you to the areas of the vehicle to inspect for the test. In addition to this section, you should also review Section 2 prior to conducting the pre-trip inspection.
Previous Next
Question #521 (5 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?

  • 4/32 on drive axle tires and 2/32 on all other tires
  • 4/32 on trailer axle tires and 2/32 on all other tires
  • 4/32 on steering axle tires and 2/32 on all other tires
  • 2/32 on steering axle tires and 4/32 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 #524 (6 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?

  • All these are correct
  • Low hub oil level or brakes squeaking
  • Twisted or bent valve stem and over-inflated tires
  • Rusty trails or shiny threads
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 #522 (7 of 10)

Give a brief explanation of the problem:

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

Report Cancel

What should you check for on the tires during a pre-trip inspection?

  • Check that tread is evenly worn
  • All these are correct
  • Make sure that valve caps and stems are not missing, broken or damaged.
  • Look for cuts or other damage to tread or sidewalls

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 #509 (8 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?

  • 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.
Previous Next
Question #520 (9 of 10)

Give a brief explanation of the problem:

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

Report Cancel

What should you check for on drum brakes during a pre-trip inspection?

  • Check for contaminates, such as debris or oil/grease.
  • Brake linings (where visible) should not be worn dangerously thin.
  • All these are correct
  • Check for cracks, dents or holes. Also check for loose or missing bolts.

Drum Brake

  • Check for cracks, dents or holes. Also check for loose or missing bolts.
  • Check for contaminates, such as debris or oil/grease.
  • Brake linings (where visible) should not be worn dangerously thin.
Previous Next
Question #510 (10 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 air brake system leak check, which of the following is the correct setup for the test?

  • None of these are correct
  • With the air pressure built up to the governor cut-off (120-140 psi), shut off the engine running, chock your wheels, (if necessary), and engage the tractor parking valve and trailer parking valve
  • With the air pressure built up to the governor cut-off (120-140 psi), shut off the engine, chock your wheels, (if necessary), release the tractor parking valve and trailer parking valve
  • Build the air pressure until it is between 50 - 60 pounds, keep the engine running, chock your wheels, (if necessary), release the tractor parking valve and trailer parking valve
System Leak Check. With the air pressure built up to the governor cut-off (120-140 psi), shut off the engine, chock your wheels, (if necessary), release the tractor parking valve and trailer parking valve (combination vehicles), fully apply the foot brake and hold it for one minute. Check the air gauge to see if the air pressure drops more than 3 pounds in one minute (single vehicle) or 4 pounds in one minute (combination vehicle).
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