When coupling a double or triple, which trailer should be attached last? Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question When coupling a double or triple, which trailer should be attached last? Answers The trailer directly behind the cab The middle trailer The rear trailer It doesn’t matter. Explanation When coupling a double or triple combination, the rearmost trailer should be the final trailer attached. This questions appears in the following tests: Florida Double Maryland Double