🛞Tennessee Air Brakes — Question 2 of 20
The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below ____ psi.
Tennessee CDL Air Brakes Test Info
Questions on Exam
25
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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