Cdl Combination Vehicles Exam Questions With A+ Answers.docx

Cdl Combination Vehicles Exam Questions
With A+ Answers
You supply air to the trailer tanks by:


A. Pushing in the trailer air supply valve


B. Pulling out the trailer air supply valve


C. Connecting the service air line -
correct answer ✅A. Pushing in the trailer air supply valve


Loss of air pressure in the emergency line causes:


A. The relay valve to close


B. An increase in air pressure to the service line


C. The trailer's emergency brakes to come on -
correct answer ✅C. The trailer's emergency brakes to come on


A tractor with a(n) ____ trailer requires the shortest stopping
distance.

,Cdl Combination Vehicles Exam Questions
With A+ Answers

A. Empty


B. Light loaded


C. Fully loaded -
correct answer ✅C. Fully loaded


Which of these statements is true?


A. The brake and suspension of combination vehicles work best
with a light load


B. Light vehicles need more braking power to stop than heavy ones


C. Bobtails tractors can take longer to stop than fully loaded
combination vehicles -
correct answer ✅C. Bobtails tractors can take longer to stop than
fully loaded combination vehicles

, Cdl Combination Vehicles Exam Questions
With A+ Answers
If you cannot make a right turn without swinging into another lane,
you should:


A. Swing wide before you make the turn


B. Turn wide as you can complete the turn


C. Not make that turn. Go to another place to turn -
correct answer ✅B. Turn wide as you can complete the turn


The tractor protection valve will close and the trailer emergency
brakes will come on when there is a major leak in what air line?


A. Service


B. Emergency


C. Parking -
correct answer ✅B. Emergency