Life is a highway, or so the snappy song by Canadian crooner Tom Cochrane tells us. But what is a highway, exactly? And when it comes to freeways vs. highways, is there a real difference? Living in ...

With over 3.7 million miles, the American road network is the most extensive in the world, comprising 14% of the world's roads. Notable features include the Katy Freeway in Texas, recognized as the ...