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CDL Doubles and Triples Endorsement T Practice Test -4

Study for your CDL Doubles & Triples Endorsement Test with this FREE Practice Test. 25 practice Questions for CDL Doubles & Triples Endorsement Test straight from the CDL hand book, Stop stressing about the test and practice today with our multiple choice practice test.
Questions number
Mistakes Allowed
Passing Score

CDL Sample Test Questions

A typical tractor unit needs how many seconds to clear a single track of a railroad?
  • 5 seconds.
  • 8 seconds.
  • 14 seconds.
  • 20 seconds.
At what psi will the tractor protection valve close?
  • 80-95 psi.
  • 60-85 psi.
  • 100-125 psi.
  • 50-75 psi.
  • 20 to 45 psi.
Controlled braking is only possible _________.
  • If performed by a bad driver.
  • During the warm weather.
  • While enough air remains in the air tanks.
  • If the air storage tank has oil in it.
How often should alcohol containers be checked during cold weather?
  • Every month.
  • Every week.
  • Every five hours.
  • Every two weeks.
  • Every day.
If the air compressor is belt-driven, you should ________.
  • Check the condition only.
  • Check the tightness of the belt only.
  • Check the weather forecast.
  • Check the condition and the tightness of the belt.