Question By law, your vehicle’s headlights must be turned on from: Answers One hour after sunset until one hour before sunrise. One hour before sunset until one hour after sunrise. 30 minutes after sunset until 30 minutes before sunrise. 30 minutes before sunset until 30 minutes after sunrise. Explanation By law, your vehicle’s headlights must be turned on from a half hour after sunset until a half hour before sunrise. Take a FREE Practice Test Now This questions appears in the following tests: Washington Practice Test