一、Many rules govern drivers on American streets and highways. 1 most common one is the speed limit. The speed limit controls 2 fast a car may go. On streets in the city, the speed limit is usually 3 5 and 35 miles per hour. On the highways between cities, the speed limit is 4 (usual) 55 miles per hour. When people drive faster than the speed limit, a policeman can stop them. He gives them pieces of paper which people call traffic 5 . They tell the drivers how much mon
