The SM53 were a tram model which operated for more than 40 years on the Oslo Tramway. A number of these trams were later rebuilt and became known as SM83 trams. The trams were based on the Swedish Mustang trams, and were delivered with Swedish electronics. Høka gained a reputation and legacy as very reliable and successful. Between 1982 and 1983, the trams were converted to one man operation. The SM53 trams were retired between 1990 and 1997.
