Utah CDL Practice Test: Double and Triples - Test 3 2026
Based on
2026 UT 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 UT 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 Utah DLD locations.
3. Trailers that do not have spring brakes have emergency brakes, which work from ________.
A
The water stored in the water tank.
B
The wind.
C
The air outside.
D
The air stored in the trailer air tank.