Most heavy vehicles use the ____ method when changing gears. 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 Most heavy vehicles use the ____ method when changing gears. Answers Double clutching Double shifting Triple clutching Explanation Most heavy vehicles with unsynchronized manual transmissions require double clutching to change gears. This questions appears in the following tests: Idaho Class A Knowledge Test Idaho Double Iowa Class A Knowledge Test New Mexico Class B Knowledge Test Oregon Tank South Carolina Double