Ruter AS is the public transport authority for Oslo and Akershus counties in Norway. Formally a limited company – 60% of its shares are owned by the Oslo county municipality and 40% by that of Akershus – it is responsible for the administration, funding, and marketing of public transport in the two counties, including buses, the Oslo Metro, Oslo Trams, and ferry services. Ruter also holds agreements with Entur concerning the regulation of fares on local and regional train services operated within the two counties.