In 1966, a motorway interchange was built in the area of Weinsberg and named after the town. The A 6 (Mannheim–Nuremberg) and A 81 (Würzburg–Stuttgart) cross there. The A 81 to Würzburg is less busy than the other three directions. Due to the opening of the Eastern Bloc, the A 6 leading in east–west direction is often a gridlock. In 2001, the daily traffic volume reached 102,000 vehicles. 30% of it are HGV, so it is one of the highest portions in the German motorway net. For a long time, the extension to six lanes of the four-lane A 6 is an urgent desire of the whole Heilbronn region. It has paid the costs of the expansion plan from Weinsberg interchange up to the Bavarian border. The extension is assured but not scheduled yet, so as a remedy the shoulders of the motorway became provisional driving strips.