Another idea is that in the 1700 s, people in France and in the United States started to use wagons with several pairs of horses and to drive on the right side of the road. It was easier for the horses with a whip in the right hand and it was safer if other vehicles passed on the left so the drives could see the distance between vehicles. Some people say that in England, people always drove on the left, and in France, people always drove on the right.