Free CDL – Commercial Drivers Licence Practice Test Question

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  Every 3 to 5 seconds or engine speed.

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  Engine speed and road speed.

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  Road speed and wind speed.

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  Engine speed and the shift indicator light.
  
  

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

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

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

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  None of the above
  
  

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  In emergency situations

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  On front axles only

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  On all wheels

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  When parking