Polish ARV built on T-55 hull. It was built to perform repairs on T-55 and T-55A tanks. When it entered service in 1973 it was probably the best ARV in the Warsaw Pact. It is still able to carry out tasks that NATO gives ARVs of its class. Unlike the T-55 and the WZT-1, the WZT-2 is still the basic ARV of the Polish army used for field repairs. It can carry out repairs not only on Soviet tanks like the T-54/T-55 and T-72 but also on Polish PT-91 and German Leopard 2A4 tanks. However because all tanks currently in Polish service weigh more than 40 tonnes it is not able to tow them. It is used to tow lighter vehicles like BWP-1 and 2S1. A number of those vehicles are used by Ratownictwo Kolejowe (Railroad emergency response services).