井堀信号場, Railway signal station in Nishi-Nippori, Tokyo, Japan
Ibori Signal Station is a railway signal facility in Nishi-Nippori that monitors train movements on the Tohoku Main Line between Ueno and Oku. The installation uses remote-controlled electronic interlocking systems to manage and coordinate train traffic on this section of track.
The signal facility opened in 1968 as part of Ueno infrastructure and became an independent station in 2003 during the railway's electronic modernization process. This change was part of a larger effort to centralize train control systems across the Tokyo region.
The signal station represents Japanese railway engineering practices, where dedicated signal points manage train movements without passenger services.
The facility is not open to the public as it is an operational railway control center. Visitors can only view it from outside through the adjacent Ueno area or from passing trains.
The facility features a complex double-crossing track layout where ascending tracks and depot access lines are optimized within limited urban space. This engineering design allows train traffic to flow efficiently without requiring additional land in this densely populated area.
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