Texas Commercial Driver’s License (CDL)
Written Test Questions And Correct
Answers (Verified Answers) Plus
Rationales 2025|2026 Q&A | Instant
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1. What is the most important reason for doing a vehicle inspection?
A. To check for fuel levels
B. To avoid being fined by DOT
C. To ensure safety
D. To maintain appearance
C. To ensure safety
A pre-trip inspection helps identify safety defects before driving, reducing
the risk of breakdowns or accidents.
2. Which of the following is not part of the pre-trip inspection?
A. Brake system
B. Mirrors
C. Air freshener
D. Lights and reflectors
,C. Air freshener
Only components critical to the vehicle's safety and operation are included
in the inspection.
3. How far ahead should you be looking while driving?
A. 5 seconds
B. 12-15 seconds
C. 20-30 seconds
D. 3-5 seconds
B. 12-15 seconds
This allows drivers to anticipate hazards and make safe driving decisions.
4. What should you do when driving in fog?
A. Use high-beam headlights
B. Increase speed to get out of it
C. Slow down and use low-beam headlights
D. Stop on the highway
C. Slow down and use low-beam headlights
High-beams reflect off fog and reduce visibility; low-beams help you see
better.
5. If your vehicle has air brakes, what must you do before driving?
A. Check tire pressure
B. Test the parking brake
C. Test the low-pressure warning system
D. Check oil level
C. Test the low-pressure warning system
This system must function properly to ensure you’re warned of dangerous
pressure levels.
, 6. What is the proper way to hold a steering wheel?
A. With one hand
B. With two hands on the top
C. Firmly with both hands on opposite sides
D. Holding the bottom
C. Firmly with both hands on opposite sides
This provides better control and response during driving.
7. When backing your vehicle, what should you do?
A. Use only mirrors
B. Rely on GPS
C. Back slowly and use a helper if possible
D. Back quickly to minimize risk
C. Back slowly and use a helper if possible
Backing is risky; going slow and using a spotter helps prevent accidents.
8. What should you do when confronted by an aggressive driver?
A. Make eye contact
B. Engage with them
C. Avoid them and report the incident
D. Brake check them
C. Avoid them and report the incident
Staying calm and avoiding escalation ensures your safety.
9. Which of the following statements about cargo is true?
A. Cargo should be loaded loosely
B. Cargo doesn’t need to be secured if it’s heavy
C. Cargo must be balanced and secured
D. Light cargo can be unsecured
, C. Cargo must be balanced and secured
Improperly secured cargo can shift and cause loss of control.
10. What is "stabbing" the brakes?
A. Pressing and releasing quickly
B. Applying the brake hard and releasing when locked
C. Pushing brake and holding
D. Using engine braking
B. Applying the brake hard and releasing when locked
This method is used in emergencies to regain control on slippery surfaces.
11. What is the minimum tread depth for front tires on a
commercial vehicle?
A. 2/32 inch
B. 3/32 inch
C. 4/32 inch
D. 6/32 inch
C. 4/32 inch
This depth ensures safe grip, especially in wet conditions.
12. What should you do if your brakes fail on a downgrade?
A. Turn off the engine
B. Downshift and use an escape ramp
C. Pump the brakes
D. Steer off the road immediately
B. Downshift and use an escape ramp
Escape ramps are designed to safely stop runaway vehicles.
Written Test Questions And Correct
Answers (Verified Answers) Plus
Rationales 2025|2026 Q&A | Instant
Download Pdf
1. What is the most important reason for doing a vehicle inspection?
A. To check for fuel levels
B. To avoid being fined by DOT
C. To ensure safety
D. To maintain appearance
C. To ensure safety
A pre-trip inspection helps identify safety defects before driving, reducing
the risk of breakdowns or accidents.
2. Which of the following is not part of the pre-trip inspection?
A. Brake system
B. Mirrors
C. Air freshener
D. Lights and reflectors
,C. Air freshener
Only components critical to the vehicle's safety and operation are included
in the inspection.
3. How far ahead should you be looking while driving?
A. 5 seconds
B. 12-15 seconds
C. 20-30 seconds
D. 3-5 seconds
B. 12-15 seconds
This allows drivers to anticipate hazards and make safe driving decisions.
4. What should you do when driving in fog?
A. Use high-beam headlights
B. Increase speed to get out of it
C. Slow down and use low-beam headlights
D. Stop on the highway
C. Slow down and use low-beam headlights
High-beams reflect off fog and reduce visibility; low-beams help you see
better.
5. If your vehicle has air brakes, what must you do before driving?
A. Check tire pressure
B. Test the parking brake
C. Test the low-pressure warning system
D. Check oil level
C. Test the low-pressure warning system
This system must function properly to ensure you’re warned of dangerous
pressure levels.
, 6. What is the proper way to hold a steering wheel?
A. With one hand
B. With two hands on the top
C. Firmly with both hands on opposite sides
D. Holding the bottom
C. Firmly with both hands on opposite sides
This provides better control and response during driving.
7. When backing your vehicle, what should you do?
A. Use only mirrors
B. Rely on GPS
C. Back slowly and use a helper if possible
D. Back quickly to minimize risk
C. Back slowly and use a helper if possible
Backing is risky; going slow and using a spotter helps prevent accidents.
8. What should you do when confronted by an aggressive driver?
A. Make eye contact
B. Engage with them
C. Avoid them and report the incident
D. Brake check them
C. Avoid them and report the incident
Staying calm and avoiding escalation ensures your safety.
9. Which of the following statements about cargo is true?
A. Cargo should be loaded loosely
B. Cargo doesn’t need to be secured if it’s heavy
C. Cargo must be balanced and secured
D. Light cargo can be unsecured
, C. Cargo must be balanced and secured
Improperly secured cargo can shift and cause loss of control.
10. What is "stabbing" the brakes?
A. Pressing and releasing quickly
B. Applying the brake hard and releasing when locked
C. Pushing brake and holding
D. Using engine braking
B. Applying the brake hard and releasing when locked
This method is used in emergencies to regain control on slippery surfaces.
11. What is the minimum tread depth for front tires on a
commercial vehicle?
A. 2/32 inch
B. 3/32 inch
C. 4/32 inch
D. 6/32 inch
C. 4/32 inch
This depth ensures safe grip, especially in wet conditions.
12. What should you do if your brakes fail on a downgrade?
A. Turn off the engine
B. Downshift and use an escape ramp
C. Pump the brakes
D. Steer off the road immediately
B. Downshift and use an escape ramp
Escape ramps are designed to safely stop runaway vehicles.
