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Exam- CDL combination vehicles|45 Questions with Complete Solutions Rated A+ $12.49   Add to cart

Exam (elaborations)

Exam- CDL combination vehicles|45 Questions with Complete Solutions Rated A+

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  • Course
  • CDL
  • Institution
  • CDL

Exam- CDL combination vehicles|45 Questions with Complete Solutions Rated A+

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  • September 10, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CDL
  • CDL
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GOLDTUTORS
Exam- CDL combination vehicles|45 Questions with
Complete Solutions Rated A+
How should you test the tractor semi trailer combination for being properly coupled?

Correct Answer-Pull gently forward in low gear against the locked trailer brakes, then

inspect your coupling.




When coupling to the trailer, how far do you back up before stopping the first time?

Correct Answer-Until the fifth wheel plate just touches the trailer.




What do you check before backing under the trailer? Correct Answer-Make sure the trailer

brakes are set.




Air lines on a combination vehicle are often colored to keep them from getting mixed up.

What color is the emergency line and what color is the service line? Correct Answer-Red

and blue.




After you back up to the trailer and the fifth wheel plate touches the trailer, you set the

tractor park brake, get out and hook up the emergency and service air lines. Then what do

you do before backing under the trailer? Correct Answer-Supply air to the trailer system,

then pull out the trailer air supply knob to fully set the trailer brakes.

, Exam- CDL combination vehicles|45 Questions with
Complete Solutions Rated A+
What three things can you do to prevent rollovers? Correct Answer-Keep your load

centered, keep the load as low in the trailer as possible, and go slow around turns.




How far do you raise the landing gear on your trailer? Correct Answer-Crank it up as far as

it will go.




You have coupled with a semi trailer. In what position should you put the landing gear before

driving away? Correct Answer-Fully raised with the crank handle secured in its bracket.




When uncoupling, what could happen if you park the trailer at an angle? Correct Answer-

You could do damage to the landing gear and dolly legs.




Why should you lock the tractor glad hands together or couple them to the dummy glad

hands when bobtailing? Correct Answer-It will keep dirt and water out of the lines.




When backing under a trailer, you should expect the trailer to be lifted slightly by the fifth

wheel plate. Correct Answer-True.

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