Japan JR West 321 series is a new commuter train former head of steel plus stainless steel wide body appeared in 0/2005 (2005), the Kansai urban networks. Standardize the basic design of all vehicles, electric trolley and accompanying each vehicle bogie, one by 0.5 to equip M 0.5 configuration is called the T system, increased flexibility in production cost, weight balance and organization configuration. JR Kyoto line (Tokaido / Sanyo Honsen line) JR Kobe line, JR Takarazuka line (Fukuchiyama line), JR Tozai line, JR gakkentoshi line (katamachi line) with the main commuter train of JR West Japan is widely active.