Commercial Drivers Licence v1.0 (CDL)

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Total 252 questions

Why are placards used?

  • A. To prevent terrorism.
  • B. So hazmat is not mixed with food.
  • C. It is the law.
  • D. Communicate the risk.


Answer : D

Explanation:

What should you do if you do become sleepy while driving?

  • A. Turn up the radio.
  • B. Drink caffeinated beverages.
  • C. Roll down the windows.
  • D. Stop to sleep.


Answer : D

Explanation:

When should you down shift automatic transmissions?

  • A. Half way down a hill.
  • B. At the bottom of a hill.
  • C. Never.
  • D. Before going down a hill.
  • E. None of the above


Answer : D

Explanation:

What is your most important way to see the sides and rear?

  • A. Rear view cameras.
  • B. Your mirrors.
  • C. Roll the window down.
  • D. A Helper.
  • E. All of the above.


Answer : B

Explanation:

What does, communicating, in safe driving mean?

  • A. Using a c.b. radio to let others know your intentions.
  • B. Letting others know you are there by using turn signals, four way flashers and horn.
  • C. Using hand signals
  • D. All of the above.
  • E. None of the above.


Answer : B

Explanation:

You should decrease your following distance if somebody is following you too closely.

  • A. True
  • B. False


Answer : B

Explanation:

If you swing wide to the left before turning right, another driver may try to pass you on the right.

  • A. True
  • B. False


Answer : A

Explanation:

What should you do before you drive if you are drowsy?

  • A. Take a cold shower
  • B. Get Sleep
  • C. Drink coffee
  • D. Do a little Exercise


Answer : B

Explanation:

What effects can wet brakes cause?

  • A. Can cause brakes to apply unevenly.
  • B. Can cause lack of braking power.
  • C. Can cause pulling to one side or the other.
  • D. All of the above.
  • E. None of the above.


Answer : E

Explanation:

How can you avoid the effects that wet brakes can cause?

  • A. Slow down.
  • B. Gently put on the brakes. This presses linings against brake drums or discs and keeps mud, silt, sand, and water from getting in.
  • C. Place transmission in a low gear.
  • D. Increase engine rpm and cross the water while keeping light pressure on the brakes.
  • E. When out of the water, maintain light pressure on the brakes for a short distance to heat them up and dry them out.
  • F. All of the above


Answer : F

Explanation:

What factors determine your selection of a safe speed when going down a long, steep downgrade?

  • A. Length of the grade and steepness of the grade only.
  • B. Total weight of the vehicle and cargo.
  • C. Total weight of the vehicle and cargo, length of the grade, steepness of the grade, road conditions, weather.
  • D. Total weight of the vehicle, steepness of the grade, weather.


Answer : C

Explanation:

Why should you be in the proper gear before starting down a hill?

  • A. You will not be able to shift into a lower gear once you are going down the hill.
  • B. Because you will need to be in the same gear at the bottom of the hill.
  • C. It is the law in most states.
  • D. There is no need to do this.
  • E. Because the clutch is made to be used on even surfaces.


Answer : A

Explanation:

What is a hazard?

  • A. A hazard is more than an emergency.
  • B. A hazard is a material that you haul that requires placards.
  • C. A hazard is any road condition or other road user that is a possible danger.
  • D. A hazard is a truck with no placards that has hazardous materials.


Answer : C

Explanation:

What is an advantage of going right instead of left around an obstacle?

  • A. If the shoulder is paved, going right may be best. No one is ever on the shoulder; someone could be passing you on the left.
  • B. There is no advantage.
  • C. It is much easier to turn a truck to the right than it is to the left. It is good to make a habit out of going the same way every time.
  • D. If you are blocked on both sides, a move to the right, At least you wont force anyone into an opposing traffic lane and a possible head on collision.


Answer : D

Explanation:

What can you do at an accident scene to prevent another accident?

  • A. Put on your flashers.
  • B. Set out reflective triangles to warn other traffic.
  • C. If your vehicle is involved in the accident; try to get it to the side of the road.
  • D. If you are stopping to help, park away from the accident.
  • E. All of the above.


Answer : E

Explanation:

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Total 252 questions