Kristiania Sporveisselskab

A/S Kristiania Sporveisselskab or KSS, nicknamed the Green Tramway , was an operator of part of the Oslo Tramway from 1875 to 1924. The company was established in 1874 and started with horsecar operations on the Ullevål Hageby Line, Gamlebyen Line and the Grünerløkka–Torshov Line. The network was electrified with in 1899 and 1900, whereby the company was bought by Union Elektricitäts-Gesellschaft. It delivered new Class U trams. Within a few years the company had also opened the Vålerenga Line and Kampen Line. It took over Kristiania Kommunale Sporveie in 1905, taking over its fleet of Class S trams and the Sagene Ring, the Vippetangen Line and the Rodeløkka Line.