| Company type | Private |
|---|---|
| Industry | Tramway |
| Founded | 26 August 1874 |
| Defunct | 1924 |
| Fate | Merger |
| Successor | Oslo Sporveier |
| Headquarters | Oslo, Norway |
Kristiania Sporveisselskab | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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A/S Kristiania Sporveisselskab or KSS, nicknamed the Green Tramway (Norwegian: Grønntrikken), 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.
The company was based at Homansbyen Depot. From 1912 it started an extensive cooperation with its main competitor, Kristiania Elektriske Sporvei (KES). KSS also took delivery of the Class SS trams and from 1921 the Class H trams. The company build part of the Sinsen Line in 1923. Both companies were municipalized in 1924 to become Oslo Sporveier.