a test line for alternative propulsion buses in 2014 - and on the line 48 (Verkehrsbetriebe Hamburg-Holstein). The goal of the city is to only order buses with alternative propulsion from 2020 on. Ferries The HADAG Seetouristik und Fährdienst runs public transport ferries, operating 21 ferries on 6 lines with a length of . Rapid transit and commuter rail Rapid transit is provided by Hamburg U-Bahn and Hamburg S-Bahn and several commuter rail lines. In 2015, the system consists of a length, with 289 stations for the region. 1,969 vehicles were owned by ten operating companies: AKN Eisenbahn, DB Regio, Eisenbahnen und Verkehrsbetriebe Elbe-Weser (EVB), Erixx GmbH, Hamburg Hochbahn AG (HHA), metronom Eisenbahngesellschaft, nordbahn Eisenbahngesellschaft (NBE), Nord-Ostsee-Bahn (NOB) (part of Veolia Verkehr GmbH), S-Bahn Hamburg plc, and Verkehrsgesellschaft Norderstedt (VGN). Taxis Public transport with taxis is regulated by law. In 2008, according to the Hamburg Chamber of Commerce there were 2,168 companies with 3,675 vehicles, and more than 10,000 employees, in 80% of the companies the driver is also the owner of the company. In total 20 million transports were handled. Railways Hamburg is served by long distance and regional trains of Germany's major railway company Deutsche Bahn AG. The city's main railway station for longer-distance services is Hamburg Hauptbahnhof. There are permanent Intercity-Express lines to Berlin, Frankfurt am Main (continuing Stuttgart and Munich) and Bremen (continuing to the Ruhr area and Cologne). To the north, ICE trains connect Hamburg with Aarhus and Copenhagen in Denmark and Kiel in Schleswig-Holstein. There are also several InterCity- and EuroCity- passenger train connections. There are numerous Regional-Express and Regionalbahn services to Schleswig-Holstein and Lower Saxony. The major railway lines are Berlin–Hamburg Railway, Hanover – Hamburg, Lower Elbe Railway, and Wanne-Eickel – Hamburg. In 2007, the port railway (German: Hafenbahn) had a freight transport volume of 39.7 mill t nearly, including around 1,801,600 container with at least 1,585,600 inbound and outbound coaches. In total, freight had a volume of more than (1000 t) in 2008, it increased 6.3% compared to 2007. Roads and streets As of 2008, Hamburg has 8,877 officially named streets, places, and—according to the (Behörde für Stadtentwicklung und Umwelt)—2,500 bridges. Some streets are well known like the Reeperbahn. Hamburg reduced the speed limit to in several streets. According to the Department of Motor Vehicles (Kraftfahrt-Bundesamt), in Hamburg were 569,530 private cars registered (327 cars/1000 people) in 2007. There were 10,612 traffic