Home › CDL Practice Tests › Air Brakes Questions › Question 13
What are the flexible air hoses and lines between the tractor and trailer commonly connected with?
- A.Quick-release tire chucks
- B.Electrical pigtails only
- C.Gladhands that lock together and seal the service and supply lines
- D.Hook-and-loop straps
Correct answer
C. Gladhands that lock together and seal the service and supply lines
Why
Gladhands join the tractor's air lines to the trailer so service signals and supply pressure can cross the connection. Drivers must check that the seals are clean, the hands are fully locked, and the lines are supported so they do not drag or chafe.
Manual topic: Air Brakes - Air Brake System Components · From the Air Brakes practice bank (AB-013).