CDL Knowledge Quiz

What does CDL stand for?

• A) Commercial Driving License

• B) Certified Driving License

• C) Commercial Driver's License

• D) Certified Driver's License

What is the minimum age to obtain a CDL in most states?

• A) 16

• B) 18

• C) 21

• D) 25

Which of the following is NOT a class of CDL?

• A) Class A

• B) Class B

• C) Class C

• D) Class D

What is the primary purpose of the air brake system?

• A) To improve fuel efficiency

• B) To reduce wear on brake pads

• C) To stop the vehicle

• D) To increase speed

What should you do if your vehicle starts to skid?

• A) Brake hard

• B) Steer in the direction of the skid

• C) Accelerate

• D) Turn off the engine

What is the proper way to make a right turn in a large vehicle?

• A) Turn sharply to the right

• B) Move into the right lane before the turn

• C) Swing wide to the left before turning

• D) Turn from the left lane

How often should you conduct a pre-trip inspection?

• A) Once a month

• B) Before each trip

• C) Only when you feel something is wrong

What is the primary danger of driving in fog?

• Reduced visibility

• Increased speed limits

• Poor road conditions

• Distracted drivers

What is the correct procedure for backing up a large vehicle?

• Always use mirrors

• Look over your shoulder

• Use a spotter if available

• All of the above

What does a solid yellow line on your side of the road indicate?

• Passing allowed

• No passing

• Lane change allowed

• Road construction