When you must travel down a grade, when should you switch into a lower gear? 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 you must travel down a grade, when should you switch into a lower gear? Answers Before beginning the grade After you have already started the grade As far down the grade as possible At the bottom of the grade Explanation Before starting down a hill, you should shift into a lower gear. This will help get your vehicle to a speed that you can control without having to use your brakes too much. This questions appears in the following tests: Illinois Class A Knowledge Test Indiana Class B Knowledge Test Massachusetts Passenger Mississippi Class A Knowledge Test Nebraska Passenger West Virginia Class A Knowledge Test