CDL GENERAL KNOWLEDGE
ADVANCED TEST 2026/2027 QUESTIONS
AND ANSWERS
1. Which of the following is true regarding tire pressure during hot weather?
A. Air pressure should be let out to keep the tires from blowing.
B. Air pressure will increase, but you should not let any out.
C. Tire pressure decreases due to road friction.
D. Tire pressure remains constant regardless of temperature.
Answer: B
Conceptual Explanation: Air pressure increases as tires get hot. However, you should not
let air out, as the pressure will be too low when the tires cool down.
2. What is the minimum depth required for tires other than the front tires?
A. 4/32 inch
B. 2/32 inch
C. 1/32 inch
,D. 6/32 inch
Answer: B
Conceptual Explanation: Federal regulations require at least 4/32 inch tread depth on
front tires and 2/32 inch on all other tires.
3. When performing a pre-trip inspection, how much steering wheel ‘play’ is considered
excessive?
A. More than 5 degrees (roughly 1 inch on a 20-inch wheel)
B. More than 10 degrees (roughly 2 inches on a 20-inch wheel)
C. More than 15 degrees
D. More than 20 degrees
Answer: B
Conceptual Explanation: Steering wheel play of more than 10 degrees (about 2 inches on
a 20-inch steering wheel) can make it difficult to steer the vehicle.
4. What should you do if your vehicle catches fire while you are driving?
A. Pull off the road and park in an open area.
B. Park the vehicle in a service station.
C. Stop the vehicle under a bridge for shade.
D. Keep driving until the wind puts it out.
, Answer: A
Conceptual Explanation: Pulling into an open area prevents the fire from spreading to
buildings or trees and keeps the road clear for emergency vehicles.
5. Under the ‘Implied Consent’ law, by driving a CMV, you have given consent to:
A. Testing for alcohol or controlled substances.
B. A search of your personal vehicle.
C. A background check by the FBI.
D. Forfeit your CDL if you are involved in any accident.
Answer: A
Conceptual Explanation: Implied consent means that by holding a CDL and driving, you
agree to be tested for alcohol or drugs if a law enforcement officer requests it.
6. Which of these statements about downshifting is true?
A. Downshift when you reach the bottom of a hill.
B. Downshift before entering a curve.
C. Downshift only when the engine starts to stall.
D. Downshift while in the middle of a sharp turn.
Answer: B
ADVANCED TEST 2026/2027 QUESTIONS
AND ANSWERS
1. Which of the following is true regarding tire pressure during hot weather?
A. Air pressure should be let out to keep the tires from blowing.
B. Air pressure will increase, but you should not let any out.
C. Tire pressure decreases due to road friction.
D. Tire pressure remains constant regardless of temperature.
Answer: B
Conceptual Explanation: Air pressure increases as tires get hot. However, you should not
let air out, as the pressure will be too low when the tires cool down.
2. What is the minimum depth required for tires other than the front tires?
A. 4/32 inch
B. 2/32 inch
C. 1/32 inch
,D. 6/32 inch
Answer: B
Conceptual Explanation: Federal regulations require at least 4/32 inch tread depth on
front tires and 2/32 inch on all other tires.
3. When performing a pre-trip inspection, how much steering wheel ‘play’ is considered
excessive?
A. More than 5 degrees (roughly 1 inch on a 20-inch wheel)
B. More than 10 degrees (roughly 2 inches on a 20-inch wheel)
C. More than 15 degrees
D. More than 20 degrees
Answer: B
Conceptual Explanation: Steering wheel play of more than 10 degrees (about 2 inches on
a 20-inch steering wheel) can make it difficult to steer the vehicle.
4. What should you do if your vehicle catches fire while you are driving?
A. Pull off the road and park in an open area.
B. Park the vehicle in a service station.
C. Stop the vehicle under a bridge for shade.
D. Keep driving until the wind puts it out.
, Answer: A
Conceptual Explanation: Pulling into an open area prevents the fire from spreading to
buildings or trees and keeps the road clear for emergency vehicles.
5. Under the ‘Implied Consent’ law, by driving a CMV, you have given consent to:
A. Testing for alcohol or controlled substances.
B. A search of your personal vehicle.
C. A background check by the FBI.
D. Forfeit your CDL if you are involved in any accident.
Answer: A
Conceptual Explanation: Implied consent means that by holding a CDL and driving, you
agree to be tested for alcohol or drugs if a law enforcement officer requests it.
6. Which of these statements about downshifting is true?
A. Downshift when you reach the bottom of a hill.
B. Downshift before entering a curve.
C. Downshift only when the engine starts to stall.
D. Downshift while in the middle of a sharp turn.
Answer: B
