Commercial Driver’s License (CDL) Exam Endorsement Test: The Doubles/Triples Test — Flashcards | CDL - Commercial Driver's License Exam | FatSkills

Commercial Driver’s License (CDL) Exam Endorsement Test: The Doubles/Triples Test — Flashcards

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When doing a walkaround inspection of a double or triple trailer, the shut-off valves should be _______ at the rear(s) of the front trailer(s) and ________ at the rear of the last trailer.
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