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. Take a FREE Practice Test Now This questions appears in the following tests: Louisiana Knowledge Test Class A , Arizona Knowledge Test Class B , Maine Knowledge Test Class B , Ohio Knowledge Test Class B , Rhode Island Knowledge Test Class B , Hawaii Passenger ,