CDL Practice Tests: Pre-Trip Inspection
Choose A Section:
Go!Which of the following is NOT one of the belts you will check during a pre-trip inspection of the engine compartment?
- Power steering belt
- Water pump belt
- Alternator 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.
When doing a pre-trip inspection of the power steering, play in the steering wheel should not exceed how much?
- 30 degrees (or about 6 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.
- 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
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.
- Make sure the air lines are properly attached to the trailer
- Look for puddles on the ground.
- 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.
When doing a pre-trip inspection, how much of a gap should there be between the 5th wheel and the trailer?
- 1/4 inch
- No gap
- 1 inch
- No less than 2 inches
When inspecting a passenger bus, which of the following must be checked when inspecting emergency exits?
- All these are correct
- Make sure emergency exits are not damaged
- Check that any emergency exit warning devices are working.
- Make sure the emergency exits operate smoothly and close securely from the inside
Emergency Exits
- Make sure that all emergency exits are not damaged, operate smoothly and close securely from the inside.
- Check that any emergency exit warning devices are working.
When doing a pre-trip inspection, what should you check on the battery box?
- All these are correct
- Battery box and cover or door must be secure
- Battery connections should not show signs of excessive corrosion
- Battery(s) are secure, connections are tight and cell caps are present
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.
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 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 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 6 pounds in one minute (single vehicle) or 8 pounds in one minute (combination vehicle)
- 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)
When doing an air brake system leak check, which of the following is the correct setup for the test?
- 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
- 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
What do you check for with the safety belt during a pre-trip inspection?
- All these are correct
- The belt adjusts and latches properly
- The belt is not ripped or frayed
- The belt is securely mounted
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?
- 80 psi
- 140 psi
- 60 psi
- 100 psi
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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