B31 and B32. A by-pass highway around Ravensburg and Weingarten was completed recently. The regional airport is situated at Friedrichshafen, about 15 km south of Ravensburg. The nearest national motor-ways are the A7 and A8 (approach at Ulm) and the A96 (approach at Lindau or Wangen im Allgäu). In 1847, the railway station of Ravensbug was put in operation, part of the so-called "Swabian Railroad" from Stuttgart to Friedrichshafen, the oldest railroad of Württemberg and well known in all of Germany by the folk-style song . Local businesses Mechanical engineering has traditionally been the main type of industry in the region. Based on the demand of the paper and textile industries (now widely reduced) and a long tradition of flour, paper and other mills, many engineering factories arose at the end of the 19th century. Today the primary engineering firms in Ravensburg are the left-overs of the former Escher-Wyss AG (a subsidiary of the Swiss Sulzer AG) which are now subsidiaries of the Austrian "Andritz Hydro". Ravensburger AG, whose headquarters are located in the city, is a company internationally known for board games, jigsaw puzzles and children's books. The pastry factory :de:Tekrum (Theodor Krumm GmbH & Co. KG) is another company with an internationally known brand name. Since January 2005 it has been a wholly owned subsidiary of Griesson–de Beukelaer. Other large industrial companies include: Vetter Pharma, a manufacturer of pre-filled injection systems Omira, one of the largest dairies in southern Germany the tool factory Hawera Probst (a subsidiary of Robert Bosch), the worldwide market leader in hammer drill bits the component supplier EBZ Engineering Bausch & Ziege (formerly Nothelfer, a subsidiary of ThyssenKrupp Automotive) the packaging manufacturer "Coveris Rigid" (formerly Autobar Packaging) two suppliers of solar power systems, Pro Solar Solarstrom and pro solar Energietechnik Media The local newspaper is the Schwäbische Zeitung. The radio companies Radio 7 and Südwestrundfunk run broadcasting studios at Ravensburg. In Horgenzell near Ravensburg, the Ravensburg-Horgenzell transmitter transmitted Deutschlandfunk on the medium wave frequency 756 kHz. Culture The city's most popular festival is the annual "Rutenfest", which takes place mid year. Sport The city's association football club FV Ravensburg, formed in 1893, has played in the Oberliga Baden-Württemberg on three occasions from 1978 to 1983, from 1998 to 2000 and again since 2003. From 2006 to 2010, Ravensburg hosted the Air Canada Cup or MLP Nations Cup, an international women's ice hockey tournament. Twin