Autobahn (plural: Autobahnen) is the German name; in French-speaking Switzerland they are known as autoroutes, and in Italian-speaking Switzerland they are known as autostrade (singular: autostrada). Swiss motorways have general speed limits of 120 km/h (75 mph). Road passenger transport Local bus services cover the whole country. Postauto cover the smaller urban areas and every region not connected to the rail network. Switzerland also has a well-developed network of car sharing organised by the Mobility Carsharing cooperative. Biking Cycling is included and promoted in the Swiss constitution since 2018. Concretely, the authorities must develop bike-lanes and related infrastructures. The Asian trend of bike sharing came to Switzerland in 2017 with new companies emerging such as oBike, PubliBike and Smide. The Singaporean-based company oBike launched in the city of Zurich on 5 July 2017. Air transport 64 (2012) Airports - with paved runways total: 41 over 3,047 m: 3 Zurich Airport Geneva Airport EuroAirport Basel Mulhouse Freiburg 2,438 to 3,047 m: 2 1,524 to 2,437 m: 13 914 to 1,523 m: 6 Bern Airport Lugano Airport under 914 m: 17 (2012) Airports - with unpaved runways: total: 23 under 914 m: 23 (2012) Heliports: 1 Zurich Airport also called Kloten Airport, located in Kloten, canton of Zurich, is Switzerland's largest international flight gateway and hub to Swiss International Air Lines and Lufthansa. The airport handled 27.6 million passengers in 2016. In 2003, Zurich International completed an expansion project in which it built a car park, a midfield terminal, and an automated underground train to move passengers between the existing terminal complex and the new terminal. Zurich International lost traffic when Swissair shut down its operations. When Lufthansa took over its successor Swiss International Air Lines (SWISS), traffic grew again. Zurich Airport's railway station (Zürich Flughafen) is underneath the terminal. There are trains to many parts of Switzerland; frequent S-Bahn services, plus direct Inter-regio and intercity services to Winterthur, Bern, Basel and Lucerne (Luzern). By changing trains at Zürich Hauptbahnhof most other places in Switzerland can be reached in a few hours. The second largest airport of the country, Geneva Airport , handled 16.5 million passengers in 2016. The airport has a single runway, the longest of its kind in Switzerland at 3,900 meters, built in 1960. The runway could only be built after an agreement was reached with France to exchange a piece of territory since it wouldn't otherwise fit entirely