South Carolina CDL Practice Test: Double and Triples - Test 3 2023
Based on
2023 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.
1. Usually, a fully charged air system has _______ psi.
A
60 psi.
B
90 psi.
C
100 psi.
D
125 psi.