TWR 70-000 series


The Tokyo Waterfront Area Rapid Transit 70-000 series is a DC commuter electric multiple unit train type operated in the Tokyo area of Japan by the Tokyo Waterfront Area Rapid Transit. The train was built by Kawasaki Heavy Industries and first entered revenue service in 1996. Its design is based on the 209 series.

Formations

, eight 10-car sets, numbered Z1 to Z3 and Z6 to Z10, are based at Yashio Depot in Tokyo. These sets are formed as follows with six motored cars and four non-powered trailer cars.
The trains were originally formed as 4-car sets for use on the Rinkai Line only, but 10-car formations were also delivered from 2002 for use on through services to/from the JR Saikyō Line. From October 2004, the fleet was reformed entirely as 10-car trains, with six surplus cars sold to JR East to create 209-3100 series EMUs used on the Kawagoe Line.

209-3100 series conversions

Six former 70-000 series cars were converted in 2004 and 2005 to become 209-3100 series EMUs for use by JR East. The subsequent identities of these cars are as shown below.
Former car numberNew car numberNew set numberDate returned to traffic
70-020KuHa 209-31017114 March 2005
70-027MoHa 209-31027216 December 2004
70-028MoHa 208-31027216 December 2004
70-029KuHa 208-31017114 March 2005
70-030KuHa 209-31027216 December 2004
70-039KuHa 209-31027216 December 2004