The Automobil-Verkehrs- und Übungsstraße (The Automobile traffic and training road) is a public road, situated in Berlin, Germany. It is better known as the AVUS. The construction of the track was started by the Kaiserlicher Automobilclub (KAC) association in the year 1907. The idea was to devise a fee-financed track which could be used for motor-sports and motor-testing. The construction stopped due to a shortage of finance and was resumed in 1913. Businessman and politician Hugo Stinnes financed the construction work. Today, the AVUS constitutes the northern part of the Bundesautobahn 115. It stands as the oldest controlled-access highway in all Europe. After 1921, the AVUS was opened to the public at ten Marks (German currency).