CDL Practice Tests: Pre-Trip Inspection
Choose A Section:
Go!For manual slack adjustors, the brake pushrod should not move more than _________ (with the brakes released) when pulled by hand.
- 6 inches
- 2 inches
- 1 inch
- 1 foot
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?
- 20-45 psi
- 10-30 psi
- 60-80 psi
- 80 - 100 psi
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 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)
- 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)
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 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
- Turn off the electrical power and begin fanning off the air pressure by pulling out the red parking brake knob
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?
- Tool kit and tire patching kit
- None of these are correct
- First aid kit and body fluid cleanup kit
- Emergency flares and flashlight
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
What should you check for on drum brakes during a pre-trip inspection?
- Check for cracks, dents or holes. Also check for loose or missing bolts.
- All these are correct
- Check for contaminates, such as debris or oil/grease.
- Brake linings (where visible) should not be worn dangerously thin.
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.
What do you check for with the safety belt during a pre-trip inspection?
- The belt is securely mounted
- The belt is not ripped or frayed
- All these are correct
- The belt adjusts and latches properly
Which of the following is NOT one of the belts you will check during a pre-trip inspection of the engine compartment?
- Alternator belt
- Power steering 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.
Which is the proper procedure for checking the trailer parking brakes?
- All these are correct
- Gently trying to pull forward with the trailer parking brake on
- 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
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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