209 series

The 209 series (209系) is an electric multiple unit (EMU) commuter train type operated by East Japan Railway Company (JR East) in the Tokyo area of Japan since 1993. The series was introduced in 1992 for experimental operations (as 901 series) and 1993 for commercial operations to replace the aging 103 series stock on the Keihin–Tōhoku and Negishi lines. The concept of the 209 series was to create a low-cost, minimal lifespan train (approximately 15 years) that would be replaced rather than rebuilt when they became life-expired.

209 series

The 209 series (209系) is an electric multiple unit (EMU) commuter train type operated by East Japan Railway Company (JR East) in the Tokyo area of Japan since 1993. The series was introduced in 1992 for experimental operations (as 901 series) and 1993 for commercial operations to replace the aging 103 series stock on the Keihin–Tōhoku and Negishi lines. The concept of the 209 series was to create a low-cost, minimal lifespan train (approximately 15 years) that would be replaced rather than rebuilt when they became life-expired.