 The latter merged into Ruter in 2008, when the Oslo Sporveier brand was discontinued.In 1875, Kristiania Sporveisselskab (KSS) started the first horsecar services in Oslo—at the time called Kristiania.It was followed by Kristiania Elektriske Sporvei (KES) who established electric tram services in 1894; by 1900 KSS had also converted its routes to electric traction.