TU2 diesel locomotive

TU2 (ТУ2) is a Soviet narrow gauge diesel locomotive for the track gauge of 750 mm (2 ft 5+1⁄2 in) The decision to replace steam locomotives by diesel ones on the narrow gauge railways was taken after the Second World War.

The first three locomotives were tested again, in Panevėžys, (Lithuania) and Pärnu, (Estonia).

During the tests, the locomotive could reach speeds of 76 km/h (47 mph), but due to the poor tracks on most of the country's narrow gauge railways, the highest speed during normal operation was 50 km/h (31 mph).

The locomotives were used on many narrow gauge railways to haul cargo as well as passenger trains.

The Aukštaitijos narrow gauge railway in Lithuania also still operates the TU2.