🔗Alabama Combination Vehicles — Question 3 of 10
Glad hands are usually connecting which of these?
Answer: A
Service and emergency air lines from the vehicle to the trailer.
Glad hands are couplers that use a rubber seal to prevent air from escaping when connecting the service and emergency air line between the truck/tractor and the trailer.
Source: Alabama CDL Manual
All choices
- AService and emergency air lines from the vehicle to the trailer.
- BElectric lines from the tractor to trailer.
- CKingpin from the trailer to the locking jaws of the fifth wheel.
Alabama CDL Combination Vehicles Test Info
Questions on Exam
20
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
Age Requirements
Intrastate: 18+ · Interstate: 21+
Alabama Law Enforcement Agency (ALEA)
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More CDL Combination Vehicles Practice Questions
- Why should you lock the tractor glad hands to each other (or dummy couplers) when you are not towing a trailer?
- After connecting the air lines but before backing under the trailer you should:
- The crack-the-whip effect is related to:
- Sudden turns or aggressive braking will have the greatest effect on which trailer?
- Which task is NOT performed during the tractor protection valve test?