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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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Good Luck!

Radar detectors are not allowed in a commercial motor vehicle except:
  • When the device is placed under the drivers seat and not powered on
  • Radar detectors are never allowed inside commercial motor vehicles
  • When the device is not in working order and/or has its power cable disconnected and batteries removed
  • When the device is contained in a locked, opaque box or similar container or the device is not in the passenger compartment of the vehicle and is not in operation
This is a question from page 6 - click here to look up the answer

Quote From Page 12 Of The Illinois CDL Manual:

Law prohibits CMVs from being equipped with any instrument designed to detect the presence of, or interfere with, microwaves at frequencies used by police radar for the purpose of monitoring vehicle speed. The term "equipped" means and includes possession or use within a CMV.


A motorist shall not be in violation if the device is contained in a locked, opaque box or similar container or the device is not in the passenger compartment of the vehicle and is not in operation.

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Knowingly and willfully leaving the scene of an accident while operating a CMV or non-CMV results in disqualification for how long?
  • Minimum of 18 months
  • Minimum of 6 months
  • Minimum of 24 months
  • Minimum of 12 months
This is a question from page 3 - click here to look up the answer

Quote From Page 8 Of The Illinois CDL Manual:

The following offenses also will lead to disqualification:

  • Knowingly and willfully leaving the scene of an accident while operating a CMV or non-CMV results in disqualification for a minimum 12 months.
  • Committing a felony while operating a CMV or non-CMV results in disqualification for a minimum 12 months.
  • A conviction for either offense above while carrying placarded hazardous materials results in disqualification for a minimum three years.
  • A conviction for violation of an out-of-service order results in disqualification for a minimum six months.
  • The use of a CMV or non-CMV in the commission of any felony involving manufacturing, distributing or dispensing a controlled substance, or possession with intent to manufacture, distribute or disperse a controlled substance,results in a lifetime disqualification.

Operating a commercial motor vehicle in violation of regulations pertaining to railroad-highway grade crossings:

  • First conviction 60-day disqualification
  • Second conviction within a three-year period -120-day disqualification
  • Third and subsequent conviction within a three year period - one year disqualification.
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What constitutes excessive speeding?
  • Any speed of 15 mph or more above the posted speed limit
  • Any speed of 20 mph or more above the posted speed limit
  • Any speed of 25 mph or more above the posted speed limit
  • Any speed of 10 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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A class B CDL holder can operate any of the following, except:
  • Single vehicle with a GVWR of at least 16,001 pounds but less than 26,001 pounds
  • Single vehicle with a GVWR of less than 16,001 pound
  • 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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Next
There are 4 different classes of CDL licenses. Which of the following is incorrect?
  • 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 D - Single vehicle with a GVWR of less than 16,001 pounds
  • Class C - Single vehicle with a GVWR of at least 10,001 pounds but less than 20,001 pounds
  • 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
This is a question from page 2 - click here to look up the answer

Quote From Page 4 Of The Illinois CDL Manual:

The classes of licenses are as follows:

  • 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

TruckingTruth's Advice:

Be sure to memorize the different CDL classes, including the various weight limits for each, as at least one question almost always comes up during the state exam.

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Excessive speeding is considered a serious traffic violation. All of the following are grounds for excessive speeding except:
  • Failure to reduce speed to avoid an accident
  • Exceeding the speed limit in a school zone
  • Exceeding the speed limit by 10 mph
  • Driving too fast for conditions
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 Excessive speeding involving any single offense for any speed of 15 mph or more above the posted speed limit.

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

TruckingTruth's Advice:

As a serious traffic violation, excessive speeding carries additional consequences. 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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Next
Turn signals must be visible from how many feet away?
  • 400 feet
  • 200 feet
  • 100 feet
  • 300 feet
This is a question from page 5 - click here to look up the answer

Quote From Page 11 Of The Illinois CDL Manual:

Vehicles must have right and left signals on the front and rear. They must be visible from 300 feet.

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How many CDL endorsements are there?
  • 4
  • 7
  • 9
  • 5
This is a question from page 2 - click here to look up the answer

Quote From Page 4 Of The Illinois CDL Manual:

There are seven special CDL endorsements and one restriction that require testing. In addition, drivers who do not pass the air brake portion of the exams are restricted to driving vehicles without air brakes.

The endorsements are:

  • 1. Charter Bus (C)
  • 2. Combination Tank and Hazardous Materials (X)
  • 3. Double/Triple Trailers (T)
  • 4. Passenger Vehicles (P)
  • 5. School Bus Endorsement (S)
  • 6. Tank Vehicles (N)
  • 7. Vehicles Carrying Hazardous Materials (H)

Restrictions:

    1. Vehicle Without Air Brakes (L-Restriction)

TruckingTruth's Advice:

We highly recommend that everyone get all endorsements available because:

  • You don't want to restrict your opportunities
  • The tests are fairly quick, simple, and inexpensive
  • You're already going through the process of learning the materials anyhow

So make sure you get all of the endorsements.

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