Solving Real-World Problems with Transportation Engineering

Solving Real-World Problems with Transportation Engineering — page 3
BEFORE THERE WERE ROADS Cars trucks buses motorcycles and bicycles travel on strips of land called roads Some roads are made of dirt or gravel A firm strong material called pavement covers most modern roads Types of roads include city streets country roads and long-distance highways Before there were roads people traveled by foot along trails These paths were often used for hunting as well as to connect villages Many trails were made at random by A steamroller prepares roads for the 2016 Olympics in Rio de Janeiro Brazil 6