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CDL Practice Test: Driving Rules & Regulations

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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
  • 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
  • When the device is not in working order and/or has its power cable disconnected and batteries removed
  • Radar detectors are never allowed inside commercial motor vehicles
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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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 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 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 less than 16,001 pound
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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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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What constitutes excessive speeding?
  • Any speed of 25 mph or more above the posted speed limit
  • 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 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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Reckless driving is considered a serious traffic violation. All of the following are grounds for reckless driving except:
  • Passing a vehicle stopped for a pedestrian in a crosswalk.
  • Passing a school bus receiving or discharging passengers or displaying a warning not to pass
  • Driving on a sidewalk
  • Performing an illegal U-Turn
This is a question from page 3 - click here to look up the answer

Quote From Page 9 Of The Illinois CDL Manual:

Reckless Driving Operating a CMV or non-CMV in a manner that exhibits a willful, wanton or reckless disregard of the safety of persons or property.

  • Passing a vehicle stopped for a pedestrian in a crosswalk.
  • Driving on a sidewalk.
  • Passing a school bus receiving or discharging passengers or displaying a warning not to pass.

TruckingTruth's Advice:

Reckless driving is a serious traffic violation which 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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Which of the following requires a class A CDL?
  • Single vehicle with a GVWR of less than 16,001 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
  • 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
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 vehicle is not required to pass a safety inspection?
  • None of these vehicles need to pass a safety inspection
  • Vehicles owned or operated by the federal government, which display proof of ownership.
  • Vehicles with a gross weight of 8,000 pounds or less.
  • Farm tractors, machinery and other implements.
This is a question from page 6 - click here to look up the answer

Quote From Page 12 Of The Illinois CDL Manual:

Garages or service stations licensed by the Department of Transportation may make safety inspections. Second division vehicles not required to pass safety inspections include:

- Vehicles with a gross weight of 8,000 pounds or less.
- Farm tractors, machinery and other implements.
- Vehicles owned or operated by the city of Chicago, which display proof of ownership.
- Vehicles owned or operated by the federal government, which display proof of ownership.
- Vehicles registered as recreational vehicles, which display proper plates.
- Properly licensed antique vehicles.
- Specialized vehicles as defined by statute.
- Vehicles properly registered in another state.

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The operator of a commercial motor vehicle can be criminally charged with driving under the influence of alcohol with a BAC of:
  • .04
  • .02
  • .08
  • .05
This is a question from page 3 - click here to look up the answer

Quote From Page 8 Of The Illinois CDL Manual:

A CDL holder may not operate a commercial vehicle with a BAC of .04 or more or a noncommercial vehicle with a BAC of .08 or more.

TruckingTruth's Advice:

It is important to note that any CDL holder found operating a commercial vehicle with any level of alcohol in his or her system will be placed out of service for a minimum of 24hrs. Drivers will not be criminally charged unless their BAC is .04 or higher, but commercial drivers are not allowed to operate commercial vehicles with even a trace amount of alcohol in their system.

And don't even think about having any alcohol anywhere in the cab of the truck at anytime - not even in the side box. If you get caught with it, it will likely be the end of your job, and possibly worse.

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