CDL Test Questions And
Correct Answers
Truck escape ramps:
a. Cannot be used by certain types of heavy vehicles.
b. Are designed to protect vehicles from damage.
c. Should not be used unless you have first tried all other ways to save your vehicle after
brake failure.
d. All of the above.
Correct Answer: Are designed to protect vehicles from damage.
Which of these can cause the vehicle to skid?
a. Not enough weight on the front axle.
b. Over acceleration.
c. Turning too sharply.
d. All of the above.
Correct Answer: All of the above.
You are driving a vehicle that could safely be driven at 55 MPH on an open road. But
traffic is now heavy, moving at 35 MPH although the speed limit is 55. The safest speed
for your vehicle in this situation is most likely:
,a. 55 MPH
b. 45 MPH
c. 35 MPH
d. 25 MPH
Correct Answer: 35 MPH
Every time you park your vehicle and shut the engine off you should:
a. Leave it in gear (if it has a manual transmission).
b. Apply the parking brake.
c. Turn the steering wheel as far to the left as you can.
d. Do all the above.
Correct Answer: Apply the parking brake.
Which of these describes how you should use the brake pedal on a steep downhill
grade?
a. Release the brake when you are 5 MPH below your safe speed, then let your speed
come back up to your safe speed and repeat braking again, (bring you speed down 5
MPH below your safe speed.)
b. With stronger pressure as the vehicle goes downhill.
c. Light steady pressure.
d. Light, pumping action.
Correct Answer: Release the brake when you are 5 MPH below your safe speed, then let
your speed come back up to your safe speed and repeat braking again, (bring you speed
down 5 MPH below your safe speed.)
,For an average commercial vehicle, being driven at 55 MPH on dry pavement it will take
about ____ to bring the vehicle to a stop.
a. The length of a vehicle.
b. Half the length of a football field.
c. Twice the length of the vehicle.
d. The length of a football field.
Correct Answer: The length of a football field.
Which of these statements about certain types of cargo is true?
a. Oversize loads can be hauled without special permits during times when the roads are
not busy.
b. When liquids are hauled, the tank should always be loaded totally full.
c. Unstable loads such as hanging meat or livestock require extra caution on curves.
d. Loads that consist of liquids in bulk do not present vehicle handling problems because
they are usually very heavy.
Correct Answer: Unstable loads such as hanging meat or livestock require extra caution
on curves.
Which of these statements about backing a heavy vehicle is true?
a. Backing is always dangerous.
b. You should back and turn toward the driver's side whenever possible.
c. You should use a helper and communicate with hand signals.
, d. All of the above are true.
Correct Answer: Backing is always dangerous.
When should you wear seat belts?
a. Only in states where it is required by law.
b. Any time you are in a moving vehicle.
c. Only when engaged in interstate commerce.
d. Only when traveling on a highway.
Correct Answer: Any time you are in a moving vehicle.
The most common cause of serious vehicle skids is:
a. Driving too fast for road conditions.
b. Poorly designed roads.
c. Poorly adjusted brakes.
d. Poorly adjusted brakes.
Correct Answer: Driving too fast for road conditions.
If you are being tailgated, you should:
a. Signal the tailgater when it is safe to pass.
b. Speed up.
c. Flash your brake lights.
Correct Answers
Truck escape ramps:
a. Cannot be used by certain types of heavy vehicles.
b. Are designed to protect vehicles from damage.
c. Should not be used unless you have first tried all other ways to save your vehicle after
brake failure.
d. All of the above.
Correct Answer: Are designed to protect vehicles from damage.
Which of these can cause the vehicle to skid?
a. Not enough weight on the front axle.
b. Over acceleration.
c. Turning too sharply.
d. All of the above.
Correct Answer: All of the above.
You are driving a vehicle that could safely be driven at 55 MPH on an open road. But
traffic is now heavy, moving at 35 MPH although the speed limit is 55. The safest speed
for your vehicle in this situation is most likely:
,a. 55 MPH
b. 45 MPH
c. 35 MPH
d. 25 MPH
Correct Answer: 35 MPH
Every time you park your vehicle and shut the engine off you should:
a. Leave it in gear (if it has a manual transmission).
b. Apply the parking brake.
c. Turn the steering wheel as far to the left as you can.
d. Do all the above.
Correct Answer: Apply the parking brake.
Which of these describes how you should use the brake pedal on a steep downhill
grade?
a. Release the brake when you are 5 MPH below your safe speed, then let your speed
come back up to your safe speed and repeat braking again, (bring you speed down 5
MPH below your safe speed.)
b. With stronger pressure as the vehicle goes downhill.
c. Light steady pressure.
d. Light, pumping action.
Correct Answer: Release the brake when you are 5 MPH below your safe speed, then let
your speed come back up to your safe speed and repeat braking again, (bring you speed
down 5 MPH below your safe speed.)
,For an average commercial vehicle, being driven at 55 MPH on dry pavement it will take
about ____ to bring the vehicle to a stop.
a. The length of a vehicle.
b. Half the length of a football field.
c. Twice the length of the vehicle.
d. The length of a football field.
Correct Answer: The length of a football field.
Which of these statements about certain types of cargo is true?
a. Oversize loads can be hauled without special permits during times when the roads are
not busy.
b. When liquids are hauled, the tank should always be loaded totally full.
c. Unstable loads such as hanging meat or livestock require extra caution on curves.
d. Loads that consist of liquids in bulk do not present vehicle handling problems because
they are usually very heavy.
Correct Answer: Unstable loads such as hanging meat or livestock require extra caution
on curves.
Which of these statements about backing a heavy vehicle is true?
a. Backing is always dangerous.
b. You should back and turn toward the driver's side whenever possible.
c. You should use a helper and communicate with hand signals.
, d. All of the above are true.
Correct Answer: Backing is always dangerous.
When should you wear seat belts?
a. Only in states where it is required by law.
b. Any time you are in a moving vehicle.
c. Only when engaged in interstate commerce.
d. Only when traveling on a highway.
Correct Answer: Any time you are in a moving vehicle.
The most common cause of serious vehicle skids is:
a. Driving too fast for road conditions.
b. Poorly designed roads.
c. Poorly adjusted brakes.
d. Poorly adjusted brakes.
Correct Answer: Driving too fast for road conditions.
If you are being tailgated, you should:
a. Signal the tailgater when it is safe to pass.
b. Speed up.
c. Flash your brake lights.
