Tallinn's tramway network consists of five lines still served with old Tatra trolleys from the 1970 and 1980 on a gauge of 1067mm. Some coaches were modernised and are now called KT4D, the Tallinn ones are used ones from Cottbus. Tatra KT4 is the name of an articulated tramcar developed by the Czech firm ČKD Tatra. The first pre-production vehicles entered service in Potsdam in 1975, with the first production vehicles in 1977. A total of 1747 units were built, with initial deliveries to East Germany (DDR) and later The USSR and SFR Yugoslavia. KT4 variants were built for both standard gauge and metre gauge tramways. Production of the KT4 tramcar was halted in 1991 due to worldwide economic and political changes at the time. The production was shortly resumed in 1997 to produce last 20 models for Belgrade, Serbia. |