South Carolina CDL Practice Test: Double and Triples - Test 3 2024
Based on
2024 SC CDL Handbook
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 SC CDL 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 South Carolina DMV locations.
2. The spring brakes come on when the air pressure drops into what range _________.
A
50-55 psi.
B
20-45 psi.
C
60-80 psi.
D
100-125 psi.