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CDL Practice Test: Driving Rules & Regulations

These CDL practice questions are from our High Road Training Program, a CDL test preparation course designed to help you learn the CDL manual.

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CDL Practice Test: Driving Rules & Regulations

Driving Rules & Regulations Questions

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What is the maximum allowed vehicle width on designated US Interstates?
  • 8 feet, 6 inches
  • 10 feet
  • 8 feet, 9 inches
  • 13 feet, 6 inches
This is a question from page 4 - click here to look up the answer

Quote From Page 9 Of The Illinois CDL Manual:

Width

The maximum width for most vehicles traveling on the United States Interstate System is 8 feet, 6 inches. While some individual states may have their own maximum limits on US Interstates within their state boarders, those limits must meet or exceed 8 feet, 6 inches

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Who must pass a DOT medical exam and carry a valid Medical Examiner's Certificate at all times while operating a commercial vehicle?
  • All of these require a DOT medical card
  • An operator of a commercial vehicle with a gross vehicle weight rating (GVWR) or a gross combination weight rating (GCWR) of 10,001 pounds or more (both private and for hire)
  • An operator of a passenger carrying vehicle designed to transport 16 or more passengers, including the driver
  • An operator of any vehicle transporting hazardous materials of a quantity that would require placarding
This is a question from page 2 - click here to look up the answer

Quote From Page 6 Of The Illinois CDL Manual:

You will need to carry a medical card with you if:

  • Operate a commercial vehicle with a gross vehicle weight rating (GVWR) or a gross combination weight rating (GCWR) of 10,001 pounds or more in the furtherance of a commercial enterprise (private or for hire); or
  • Operate a passenger carrying vehicle designed to transport 16 or more passengers including the driver; or
  • Operate any vehicle transporting hazardous materials of a quantity that would require placarding.
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What does GVWR stand for?
  • Grain Vehicle With Restrictions
  • Gross Vehicle Weight Rating
  • General Vehicle Without Restrictions
  • Gross Vehicle Width Rating
This is a question from page 1 - click here to look up the answer

Quote From Page 3 Of The Illinois CDL Manual:

GVWR (Gross Vehicle Weight Rating) - Value specified by the manufacturer as the maximum loaded weight of a single vehicle or combination of vehicles, or the registered gross weight.

TruckingTruth's Advice:

Be sure to have this memorized and understand how it's different from GCWR (Gross Combination Weight Rating). You'll most likely see a question related to CVWR / GCWR definitions on the written exam.

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What constitutes excessive speeding?
  • Any speed of 10 mph or more above the posted speed limit
  • Any speed of 15 mph or more above the posted speed limit
  • Any speed of 25 mph or more above the posted speed limit
  • Any speed of 20 mph or more above the posted speed limit
This is a question from page 3 - click here to look up the answer

Quote From Page 8 Of The Illinois CDL Manual:

Excessive speeding involving any single offense for any speed of 15 mph or more above the posted speed limit.

The following may also result in excessive speeding:

  • Failure to reduce speed to avoid an accident.
  • Driving too fast for conditions.
  • Exceeding the speed limit in a school zone.

TruckingTruth's Advice:

Excessive speeding is considered a "serious traffic violation." Two serious traffic violations within a three-year period results in a two-month disqualification. Three serious traffic violations in the same period results in a four-month disqualification.

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What does GCWR stand for?
  • General Contractor Weight Rating
  • General Cargo Weight Rating
  • Gross Combined Weight Rating
  • Gross Combination Width Rating
This is a question from page 1 - click here to look up the answer

Quote From Page 3 Of The Illinois CDL Manual:

GCWR (Gross Combined Weight Rating) - Value specified by the manufacturer as the GVWR of the power unit plus the GVWR of the towed unit or units, or the combined registered weight of the power unit plus the towed unit(s).

TruckingTruth's Advice:

Be sure you understand the difference between GCWR and GVWR. It's best to memorize the meanings and definitions of both as it will probably show up on the written exam.

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If you are caught violating a DOT out of service order, you will receive a driving disqualification for:
  • A minimum of 9 months
  • A minimum of 6 months
  • A minimum of 1 year
  • A minimum of 3 months
This is a question from page 3 - click here to look up the answer

Quote From Page 8 Of The Illinois CDL Manual:

A conviction for violation of an out-of-service order results in disqualification for a minimum six months

TruckingTruth's Advice:

The department of transportation may put drivers out-of-service for several reasons, including equipment problems, hours of service violations, alcohol violations, and any other reason they deem fit. Do not violate the out-of-service order as that is a very serious offense and could ruin your career.

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A class B CDL holder can operate any of the following, except:
  • Single vehicle with a GVWR of less than 16,001 pound
  • Single vehicle with a GVWR of at least 16,001 pounds but less than 26,001 pounds
  • Combination vehicles with a GCWR of 26,001 or more pounds providing the GVWR of the vehicle being towed is in excess of 10,000 pounds
  • Single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds
This is a question from page 2 - click here to look up the answer

Quote From Page 4 Of The Illinois CDL Manual:

  • Class A Combination vehicles GCWR* of 26,001 or more pounds providing the GVWR of the vehicle being towed is in excess of 10,000 pounds.
  • Class B Single vehicle with a GVWR* of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Class C Single vehicle with a GVWR* of at least 16,001 pounds but less than 26,001 pounds.
  • Class D Single vehicle with a GVWR* of less than 16,001 pounds.

*GCWR Gross Combination Weight Rating

*GVWR Gross Vehicle Weight Rating

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Which of the following requires a CDL?
  • Any single vehicle with a GVWR of 26,001 pounds or more pounds
  • Recreational vehicles exceeding 22,001 pounds.
  • Any vehicle, regardless of size, designed to transport up to 14 persons, including the driver
  • Any combination of vehicles with a gross combination weight rating (GCWR) of 20,001 pounds
This is a question from page 1 - click here to look up the answer

Quote From Page 3 Of The Illinois CDL Manual:

A CDL must be obtained by the driver of any of the following vehicles:

  • Any combination of vehicles with a gross combination weight rating (GCWR)** of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR)* of the vehicle being towed is in excess of 10,000 pounds.
  • Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver.
  • Any vehicle required by federal regulations to be placarded while transporting hazardous materials.

TruckingTruth's Advice:

Recreational Vehicles do not require a CDL

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