Commercial Drivers Licence v1.0

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Exam contains 252 questions
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You should let air out of hot tires so the pressure goes back to normal.

  • A. True
  • B. False


Answer : B

Explanation:

What is black ice?

  • A. Ice that turns black in extreme temperatures.
  • B. Ice that is more slippery than white ice.
  • C. A thin layer of ice that is clear enough that you can see the road underneath it. It makes the road look wet.
  • D. A thick layer of ice that is hard to see on a black top road.
  • E. None of the above


Answer : C

Explanation:

Stopping is not always the safest thing to do in an emergency.

  • A. True
  • B. False


Answer : A

Explanation:

Common medicines for colds can make you sleepy.

  • A. True
  • B. False


Answer : A

Explanation:

How often must you stop while on the road to check your cargo?

  • A. Within 25 miles after beginning a trip, after every break, and every 3 hrs, 150 miles.
  • B. Within 50 miles of the start of the trip.
  • C. Within 25 miles after beginning a trip, after every break, and every 2 hrs, 100 miles.
  • D. Within 30 miles of the start of the trip and after every break only thereafter.


Answer : A

Explanation:

Name two situations where legal maximum weights may not be safe to haul?

  • A. In large cities and over bridges.
  • B. During bad weather or in mountains.
  • C. Through tunnels and over bridges.
  • D. At night or during rush hour traffic.


Answer : B

Explanation:

Name the two basic reasons for covering cargo on an open bed?

  • A. To protect people from spilled cargo, and to protect the environment from spilled cargo.
  • B. To protect the environment from spilled cargo, and to protect the cargo from weather.
  • C. To protect people from spilled cargo, and to protect the cargo from weather.
  • D. To keep cargo secure from possible thieves and to keep cargo a secret.


Answer : B

Explanation:

What things should you check during a trip?

  • A. Manifest and shipping papers.
  • B. Check for load stability by slightly swerving from left to right within your lane.
  • C. This is how can you test the trailer emergency brakes
  • D. Map, directions, and weather report.
  • E. Watch gauges, mirrors, use your senses to check for problems, look, listen, smell.


Answer : E

Explanation:

What is the minimum tread depth for front tires?

  • A. 1/32
  • B. 2/32
  • C. 4/32
  • D. 6/32


Answer : C

Explanation:

When backing, why is it important to use a helper?

  • A. It is easier to have the helper back the truck for you.
  • B. It is required by federal law.
  • C. It is good to have someone else around to blame if you hit something.
  • D. Helpers have nothing better to do than help you back up your truck.
  • E. Because there are blind spots you can't see.


Answer : E

Explanation:

What is the most important hand signal that you and the helper should agree on?

  • A. Pull forward.
  • B. Keep Backing.
  • C. Stop!
  • D. Straighten out.


Answer : C

Explanation:

What three things add up to total stopping distance?

  • A. Perception Distance + Reaction Distance+ Braking Distance.
  • B. Resistance Distance + Perception Distance + Braking Distance.
  • C. Visual Distance+ Braking Distance + Resistance Distance.
  • D. Braking Distance + Perception Distance + Lag Time.
  • E. None of the above


Answer : A

Explanation:

Where should your reflectors be placed when stopped on a divided highway?

  • A. 20 feet, 150 feet, and 300 feet toward the approaching traffic.
  • B. 10 feet, 100 feet, and 200 feet toward the approaching traffic.
  • C. 15 feet, 75 feet, and 150 feet toward the approaching traffic.
  • D. 30 feet, 100 feet, and 150 feet toward the approaching traffic.


Answer : B

Explanation:

What is the minimum tread depth for tires other than the front tires?

  • A. 1/32
  • B. 2/32
  • C. 3/32
  • D. 4/32
  • E. 5/32


Answer : B

Explanation:

What are two main things to look for ahead while driving?

  • A. Road signs and detours.
  • B. Fire and Flooding.
  • C. Bridges and Tunnels.
  • D. Truck Stops and Police.
  • E. Traffic and road conditions.


Answer : E

Explanation:

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Exam contains 252 questions
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