CDL Practice Tests: Pre-Trip Inspection
Choose A Section:
Go!When doing a pre-trip inspection, what should you check on the battery box?
- All these are correct
- 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
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.
Which of the following is NOT one of the dash indicators you will look for during your pre-trip inspection?
- Air lines reversed indicator
- Four-way emergency flashers
- Antilock Braking System (ABS) 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.
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
- All of these are correct
- Make sure the crank handle is secured and the support frame is not damaged
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
- No gap
- 1 inch
- 1/4 inch
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?
- 80 - 100 psi
- 60-80 psi
- 20-45 psi
- 10-30 psi
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?
- 140 psi
- 100 psi
- 60 psi
- 80 psi
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.
- 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.
When doing an emergency system check on air brake systems, how do you begin the test?
- Turn off the electrical power and begin fanning off the air pressure by pulling out the red parking brake knob
- Turn the engine on and begin fanning off the air pressure by rapidly applying and releasing the foot brake
- 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 rapidly applying and releasing the foot brake
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
- 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
- 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
- All of these are correct
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.
When doing an air brake system leak check, how long do you hold the pedal and what do you check for?
- Hold the pedal for 10 seconds. 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)
- Hold the pedal 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)
- Hold the pedal for one minute. Check the air gauge to see if the air pressure drops more than 6 pounds in one minute (single vehicle) or 8 pounds in one minute (combination vehicle)
- Hold the pedal for two minutes. Check the air gauge to see if the air pressure drops more than 1 pound in one minute (single vehicle) or 2 pounds in one minute (combination vehicle)
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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