CDL Practice Tests: Pre-Trip Inspection
Choose A Section:
Go!When inspecting the air and electrical connections to the trailer, which of the following items does NOT need to be checked?
- Make sure the brake fluid lines are properly attached and not leaking
- Make sure the trailer electrical plug is firmly seated and locked in place.
- Make sure glad hands are locked in place, free of damage and oil/grease that can cause air leaks.
- Check that trailer air connectors are sealed and in good condition.
Air/Electrical Connections
- Check that trailer air connectors are sealed and in good condition.
- Make sure glad hands are locked in place, free of damage and oil/grease that can cause air leaks.
- Make sure the trailer electrical plug is firmly seated and locked in place.
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 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.
When doing a pre-trip inspection of the power steering, play in the steering wheel should not exceed how much?
- 20 degrees (or about 4 inches on a 20-inch wheel) before the front left wheel barely moves.
- 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.
When checking the suspension components, what should you check for?
- Look for broken or distorted coil springs.
- All these are correct
- Look for missing, shifted, cracked or broken leaf springs.
- Air ride suspension should be checked for damage and leaks.
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.
Which of the following is NOT one of the dash indicators you will look for during your pre-trip inspection?
- Antilock Braking System (ABS) indicator
- Four-way emergency flashers
- 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.
During the pre-trip inspection test you must:
- Show that the vehicle is safe to drive
- Explain to the examiner what you are checking and why
- Walk around the vehicle and point to or touch each item
- All these are correct
When doing a pre-trip inspection, which of the following is NOT one of the required pieces of emergency equipment you must have?
- Spare electrical fuses, unless circuit breaker equipped vehicle.
- A basic tool kit
- A properly charged and rated fire extinguisher
- Three red reflective triangles, six fuses or three liquid burning flares.
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.
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.
What should you check for when checking the landing gear on the trailer?
- All of these are correct
- Make sure the crank handle is secured and the support frame is not damaged
- Make sure there are no missing parts
- Check that the landing gear is fully raised
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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