Free CDL – Commercial Drivers Licence Practice Test Question

Select an option, then click Submit answer.

• ○

  It will fail roadside inspections

• ○

  It probably needs adjustment

• ○

  It has the appropriate amount of slack

• ○

  The vehicle will be very hard to stop
  
  

Select an option, then click Submit answer.

• ○

  It is easier to have the helper back the truck for you.

• ○

  It is required by federal law.

• ○

  It is good to have someone else around to blame if you hit something.

• ○

  Helpers have nothing better to do than help you back up your truck.

• ○

  Because there are blind spots you can't see.
  
  

Select an option, then click Submit answer.

• ○

  12-ounce glass of 5% beer

• ○

  5-ounce glass of 12% wine

• ○

  1 1/2-ounce shot of 80 proof liquor

• ○

  They all contain the same amount of alcohol
  
  

Select an option, then click Submit answer.

• ○

  Explosives 1.1, Dangerous, Flamable 3, Explosivess 1.4, Oxidizers 5.2

• ○

  Explosives 1.1, Corrosive 8, Flamable 3, Explosivess 1.4, Poison 6.1

• ○

  Poison Gas 2.3, Dangerous when wet 4.3,explosives1.3, explosives1.2, explosives1.1

• ○

  None of the above.

• ○

  All of the above.
  
  

Select an option, then click Submit answer.

• ○

  Portable Tank

• ○

  Tank with a stainless steel interior

• ○

  Baffled liquid tanks

• ○

  Unbaffled liquid tank
  
  

Select an option, then click Submit answer.

• ○

  Yes

• ○

  No

• ○

  It does not matter

• ○

  Never use a floor liner for any explosive class
  
  

Select an option, then click Submit answer.

• ○

  Every 3 to 5 seconds or engine speed.

• ○

  Engine speed and road speed.

• ○

  Road speed and wind speed.

• ○

  Engine speed and the shift indicator light.
  
  

Select an option, then click Submit answer.

• ○

  Portable tanks are bulk containers which are not permanently attached to a vehicle

• ○

  Cargo tanks are bulk containers which are not permanently attached to a vehicle

• ○

  Portable tanks are bulk containers which are permanently attached to a vehicle

• ○

  None of the above
  
  

Select an option, then click Submit answer.

• ○

  In emergency situations

• ○

  On front axles only

• ○

  On all wheels

• ○

  When parking
  
  

Select an option, then click Submit answer.

• ○

  The front trailer

• ○

  The middle trailer

• ○

  The rear trailer

• ○

  All the trailers have the same chance of rolling over
  
  

Select an option, then click Submit answer.

• ○

  True

• ○

  False
  
  

Select an option, then click Submit answer.

• ○

  Hand brake, parking brake, emergency brake

• ○

  Service brake, parking brake, emergency brake

• ○

  Anti-lock brake, service brake, emergency brake

• ○

  Service brake, hand brake, emergency brake
  
  

Select an option, then click Submit answer.

• ○

  Separate tanks inside the trailer

• ○

  Interior bulkheads with holes that let the liquid flow through

• ○

  A smooth interior, and is often used to transport food products

• ○

  Dampers that float on the liquid to slow movement
  
  

Select an option, then click Submit answer.

• ○

  Weight of the liquid

• ○

  Legal weight limits

• ○

  How much the liquid will expand during transit

• ○

  All of the above
  
  

Select an option, then click Submit answer.

• ○

  Trailer air supply control

• ○

  Relay valve

• ○

  Glad hands

• ○

  Cut-out cocks