 Until 1978, Oslo Sporveier almost exclusively order Büssing buses, with the exception of six Scania CR 110 M in 1972, twenty-five Scania CR 111 M in 1974, and nineteen MAN SL 200 in 1972 and 1973, and a further twenty-five in 1976.In November 1977, Oslo Sporveier bought De Blå Omnibusser and its 24 buses, which was based at Alnabru.In 1978, after pressure from Norwegian manufacturers through the press, Oslo Sporveier bought its first Norwegian-built busses, six Volvo B59 in 1978, built at Vestfold Bil- og Karosserifabrikk (VKB), and following year seven Volvo B10M buses.