Portal:Trains/Selected article/Week 30, 2010

SL79 is a class of 40 articulated trams operated by the Oslo Tramway of Norway. The trams were a variation of the Duewag trams that had been developed by the German manufacturer since the 1950s. The six-axle vehicles are unidirectional with four doors on the right side. The trams can seat 77 passengers three and four abreast, with an additional 91 people able to stand. Power output is 434 kilowatts (582 hp), provided by two motors on the two end bogies, that supplement a central unpowered Jacobs bogie located under the articulation. The trams are 23.0 metres (75.5 ft) long and 2.5 metres (8 ft 2 in) wide. They are capable of 80 kilometres per hour (50 mph) and operate on standard gauge track. They were built in two series, the first of 25 units delivered in 1982–84, and the second of 15 units delivered in 1989–90. The first 10 units were built by Duewag, while the last 30 were built in Norway by Strømmen. They were numbered 101 through 140. The two series vary slightly in specifications. The trams were ordered in 1979 after the 1977 decision to not close the tramway, after the SM53 were finished delivered in 1958. The SL79 mainly serves on lines 11, 12 and 19. Except those with an advertising livery, the trams are painted a light blue.

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