We can look back in history for reasons people move on the right or left of the road.Some people say that in Europe hundreds of years ago, people rode their horses on the left.This way,their sword was between them and anyone who was coming toward them in the opposite direction. They were ready to pull out their sword and fight to defend themselves with their right arm.But there is evidence that people used the right side,too.In 1300,some say that Pope Boniface ordered pilgrims on the way to St.Peter's Basilica to stay to the right when they crossed a nearby bridge.