arrow

2024 LA CDL Practice Test: All - Test

30. Dummy couplers _______
A
Are used when the air lines are not connected to a trailer.
B
All of the listed answers.
C
Prevent water and dirt from getting into the coupler and the air lines.
D
To which the hoses may be attached when they are not in use.
More
30/30
Progress
0
Errors
Restart
Grade
All - Test
  • Back to Test List
  • Air Brakes - Test
  • All - Test 2
  • Challenge Library
    12