🔗Tennessee Combination Vehicles — Question 11 of 20
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer:
Tennessee 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+
Tennessee Department of Safety and Homeland Security
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