The city is a major road and railway hub in southern Bulgaria with the Trakia motorway (A1) only to the north. It lies on the important national route from Sofia to Burgas via Stara Zagora. First-class roads lead to Sofia to the west, Karlovo to the north, Asenovgrad, Kardzhali to the south, and Stara Zagora and Haskovo to the east. There are intercity buses which link Plovdiv with cities and towns all over the country and many European countries. They are based in three bus stations: South, Rodopi, and North.