During any type of storm, it is recommended that you turn your headlights on. You should also turn your headlights on when driving when the sun starts going down and it isn't completely dark on the road. Other drivers find it harder to see oncoming cars in the early morning and evening hours. However, today most new cars headlights come on automatically when you turn on the car. This is a new safety feature in cars and for the last several years all new cars have this feature built in.