2. The spring brakes come on when the air pressure drops into what range _________.
A
100-125 psi.
B
50-55 psi.
C
60-80 psi.
D
20-45 psi.
Vermont CDL Practice Test: Double and Triples - Test 3 2022
Based on 2022 VT CDL Handbook
| Number of questions: 29 | |
| Passing score: 80% | |
| Acceptable number of errors: 5 |
Instruction: To obtain this endorsement for pulling two or three trailers, applicants must pass a 15-question test. And to pass the test, applicants must score at least 80%. Test questions are from the Vermont Commercial Driver Handbook. The Double/Triple trailers endorsement can be used with the Class A CDL. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Vermont DMV locations.