| When driving throughout the United States, or | | | | Road Classification Definitions |
| planning your journey to the many attractions of this | | | | Interstate Highways |
| wonderful country by map or through the Internet, | | | | If travelling from Europe you will notice that |
| you will come across the road specific terminology of | | | | Interstate Highways are the same by definition and in |
| the American road classification system. Our guide to | | | | practise as the motorways in the UK, autobahns in |
| the road classification system in America will help you | | | | Germany, and autoroutes in France. Interstate |
| understand the meaning of these roads. In the USA | | | | highways are generally divided (similar to dual |
| most roads outside cities and towns are classified as | | | | carriageways), with access through ramps (the same |
| either Interstate Highways, US Highways, State | | | | as slip roads) with usually two lanes and both sides of |
| Highways or County Roads. | | | | the road containing a hard shoulder. |