31. There, the double-decker Z�rich S-Bahn trains, and the GTW multiple unit trains , are maintained. 32. There is a possibility to connect up to 3 units or 2 units and a carriage with multiple unit train control. 33. Early electric services were worked by early Southern Railway 3-car Electric Multiple Unit trains often built from old SECR carriages. 34. This hourly service is complemented by several through services to and from Class 221 Super Voyager diesel-electric multiple unit trains . 35. A special gala passenger service was operated on the last day with hourly trains provided by a diesel electric multiple unit train . 36. Electric multiple unit trains began to service Port Kembla Station from February 1986 and the station building was replaced at the same time. 37. The "'Sprinter "'is a family of diesel multiple unit trains in use on the Perkins engine instead. 38. Eight years later in June 1956 operation of the passenger services were taken over by Diesel Multiple Unit trains with conductor guard operation. 39. Passenger operation was changed to multiple unit trains in the 1990s, using class 156 sets at first, and later class 158. 40. Most Metrorail services are operated by Electric Multiple Unit train sets of the type 5M2A . Since 1999, these trains are being refurbished.
