CDL Practice Tests: Pre-Trip Inspection
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Go!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 off the electrical power and begin fanning off the air pressure by pulling out the red parking brake knob
- 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
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?
- 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.
- Check for contaminates, such as debris or oil/grease.
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.
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
- 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
- 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
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.
When inspecting a passenger bus, which of the following must be checked when inspecting emergency exits?
- Make sure the emergency exits operate smoothly and close securely from the inside
- Check that any emergency exit warning devices are working.
- All these are correct
- Make sure emergency exits are not damaged
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.
Describe the proper service brake check:
- All of these are correct
- 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
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.
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
- 2/32 on steering axle tires and 4/32 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
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.
What do you check for with the safety belt during a pre-trip inspection?
- The belt is securely mounted
- The belt adjusts and latches properly
- The belt is not ripped or frayed
- All these are correct
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?
- 10-30 psi
- 80 - 100 psi
- 20-45 psi
- 60-80 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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