When traveling on a downgrade, your vehicle will: Question When traveling on a downgrade, your vehicle will: Answers Slow down. Travel at the same rate as on level roadway. Speed up. Explanation Gravity causes a vehicle's speed to increase when traveling on a downgrade. Adjust your speed before reaching a downgrade. This questions appears in the following tests: Alaska Class B Knowledge Test Alaska Passenger Arkansas Double Hawaii Class A Knowledge Test Hawaii Double Iowa Double Kentucky Double Michigan Passenger Mississippi Class A Knowledge Test New Hampshire Class B Knowledge Test Ohio Passenger Virginia Double Washington Passenger