Oregon CDL Double/Triple Trailers Practice Test

During an inspection of a double or triple combination, check the usual things for any combination vehicle and check

the fifth wheel and the landing gear. the trailers and the radios in the tractor. the shut-off valves, the converter dolly or dollies, and the air brakes on all trailers.

Correct Answer:

the shut-off valves, the converter dolly or dollies, and the air brakes on all trailers.

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