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CDL Pre-trip Inspection Practice Exam
Practice mode
Question
1
of 25
QUESTION 1 / 25
How can you assess the condition of mud flaps?
Choose one answer below.
A
Check if they are clean and free of dirt
✓
B
Ensure they are secure and free of damage that could allow debris to fly
✓
C
Measure their distance from the ground
✓
D
Inspect for color fading
✓
QUESTION 2 / 25
What is the condition of the water pump that needs to be checked?
Choose one answer below.
A
Should be old but functional
✓
B
Belt driven with tight bolts and no leaks
✓
C
Only should be checked for sound
✓
D
Should be disconnected for visibility
✓
QUESTION 3 / 25
Which component must be checked during the engine compartment inspection?
Choose one answer below.
A
Transmission fluid level
✓
B
Brake pad thickness
✓
C
Engine oil level
✓
D
Power steering fluid
✓
QUESTION 4 / 25
How are the vehicle gauges checked during a pre-trip inspection?
Choose one answer below.
A
Examine them while the vehicle is stationary
✓
B
Start the vehicle and monitor that all gauges function normally once the engine is running
✓
C
Reset the gauges to check their accuracy
✓
D
Visually inspect them for cracks
✓
QUESTION 5 / 25
At what pressure should both buttons for the emergency brake pop out?
Choose one answer below.
A
10 - 20 psi
✓
B
20 - 30 psi
✓
C
20 - 45 psi
✓
D
30 - 50 psi
✓
QUESTION 6 / 25
Why must the fifth wheel plate be inspected?
Choose one answer below.
A
To ensure it is lubricated
✓
B
To check for excessive wear or damage
✓
C
Both A and B
✓
D
To ensure it is properly aligned
✓
QUESTION 7 / 25
What condition should the 5th wheel be in to ensure safety and functionality?
Choose one answer below.
A
Broken but still functional
✓
B
Well greased and not damaged
✓
C
Rusty with loose parts
✓
D
Completely clean with no lubrication
✓
QUESTION 8 / 25
What type of damage should be looked for on the rear side marker light?
Choose one answer below.
A
Clean and secure, with no cracks or breaks
✓
B
Cracked but functional
✓
C
Broken but still attached
✓
D
Slightly dirty but functional
✓
QUESTION 9 / 25
What is the condition of the cross members that must be checked?
Choose one answer below.
A
They can be slightly broken
✓
B
All must be intact and secured to the frame
✓
C
Some can be missing if others are present
✓
D
They should be loose but not completely detached
✓
QUESTION 10 / 25
What should you observe about the belts during the engine inspection?
Choose one answer below.
A
They should be loose and flexible
✓
B
They should have no visible signs of wear
✓
C
They should be tight, free of cracks, and in good condition
✓
D
They should be shiny and polished
✓
QUESTION 11 / 25
What should be checked about air lines to the brake chamber under the trailer?
Choose one answer below.
A
They should be cut but working
✓
B
They must not be cut, frayed or rubbing on anything
✓
C
They do not need to be connected tightly
✓
D
They can have minor leaks
✓
QUESTION 12 / 25
What should be checked for the main air line?
Choose one answer below.
A
Connections should be easily visible
✓
B
It must be cut or frayed for effective function
✓
C
Connections should be tight without any leaks
✓
D
Can rub against other parts as long as secure
✓
QUESTION 13 / 25
How can the adjustment of the slack adjuster be verified?
Choose one answer below.
A
By looking for missing parts
✓
B
By pulling to see if it moves more than 1 inch
✓
C
By checking for discoloration
✓
D
By measuring the length
✓
QUESTION 14 / 25
How are spring brakes checked?
Choose one answer below.
A
By visually inspecting them only
✓
B
Engage and release them, checking for proper operation without dragging
✓
C
Using an electronic diagnostic tool
✓
D
By tapping them lightly with a hammer
✓
QUESTION 15 / 25
How should you check the coolant level during a pre-trip inspection?
Choose one answer below.
A
Look at the engine temperature gauge
✓
B
Remove the radiator cap and check the coolant against the full mark
✓
C
Inspect the color of the coolant in the reservoir
✓
D
Check for leaks underneath the vehicle
✓
QUESTION 16 / 25
During the pre-trip inspection, how can you check the lights?
Choose one answer below.
A
Check the light bulbs in the trunk
✓
B
Turn on the vehicle and check all lights for function
✓
C
Inspect the light switches inside the cabin only
✓
D
Look for any signs of burnt bulbs in the headlight housing
✓
QUESTION 17 / 25
How should the condition of the frame be assessed?
Choose one answer below.
A
Examine for surface paint quality
✓
B
Look for any signs of damage, rust, or excessive wear that could compromise safety
✓
C
Ensure the frame is level
✓
D
Inspect for any visible oil leaks
✓
QUESTION 18 / 25
How should the condition of the windshield wipers be assessed?
Choose one answer below.
A
Check for cracks and ensure they are functioning properly
✓
B
Check for damage or wear
✓
C
Both A and B
✓
D
Inspect for proper arm position
✓
QUESTION 19 / 25
What is the correct method to check the operation of the horn?
Choose one answer below.
A
Inspect the external horn physical condition
✓
B
Press the horn button and listen for sound
✓
C
Use a sound level meter to measure the decibels
✓
D
Check the vehicle’s manual for horn specifications
✓
QUESTION 20 / 25
What is the primary method used to check the steering system connections?
Choose one answer below.
A
Pull the steering wheel and shake
✓
B
Grab the steering column and twist
✓
C
Inspect the steering tires visually
✓
D
Check the alignment using a ruler
✓
QUESTION 21 / 25
How do you test the emergency brakes for functionality?
Choose one answer below.
A
Apply the emergency brake and check for resistance
✓
B
Check the brake fluid level
✓
C
Listen for any unusual noises while braking
✓
D
Inspect the brake pads for wear
✓
QUESTION 22 / 25
To test the heater/defroster during a pre-trip inspection, what should you do?
Choose one answer below.
A
Turn it on and check the temperature
✓
B
Turn it on and check if it blows
✓
C
Leave it off to save energy
✓
D
Test only the defroster
✓
QUESTION 23 / 25
How should electrical wire connections be maintained during an inspection?
Choose one answer below.
A
Connections can be loose
✓
B
Connections should be clean and tight
✓
C
It's acceptable to have bare wires
✓
D
Connections can be rusty but secure
✓
QUESTION 24 / 25
What is a key indicator that the brake lights are functioning properly?
Choose one answer below.
A
They illuminate when the brake pedal is pressed
✓
B
They stay on continuously
✓
C
They flash intermittently
✓
D
They should not be illuminated at all
✓
QUESTION 25 / 25
How can you test for proper trailer brake functionality?
Choose one answer below.
A
Check the tire pressure of the trailer
✓
B
Activate the trailer brakes and check for response while stationary
✓
C
Drive at a slow speed and observe performance
✓
D
Inspect the brake lights for operation
✓
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