HUDC 9100 series C-Flyer
Data (as of 22 Feb 2026)
| Status: | Least Concern |
| Constructed in: | 1994, 2000 |
| Number built: | 24 |
| Registered: | 24 |
History
The 9100 series is based on Keisei 3700 series, though looks very different. Two eight-carriage units were introduced when the Hokuso Line (the section formerly called the Chiba Newtown Line) was extended from Chiba Newtown Chuo to Inzai-Makinohara. Another unit entered service in 2000 when the Line was extended again to Imba nihon-idai.
The series is called C-Flyer, and C stands for Chiba-Newtown, Comfortable, Clean and Culture. Each unit had payphones until 1997 despite being a commuter train, but they could not be used while the train was running the Asakusa Line (underground).
When HUDC was reorganised to Urban Renaissance Agency in 2004, a new company Chiba Newtown Railway was established, and they succeeded all rolling stock, tracks and other facilities, but the 9100 series trains have still been managed by Hokuso.
Current Operations & Future Prospects
The 9100 series runs on the Hokuso Line between Keisei-Takasago and Imba nihon-idai, as well as through-services to Keisei, Toei (Asakusa Line) and Keikyu as far as Nishi-magome or Haneda Airport.