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In the 1980s, Lengiprotrans developed a project for the modernization of electrical interlocking at Ugolnaya station in the Kaliningrad region. The operational part of signaling and communication was prepared.
In the 1980s, Lengiprotrans developed a project for the modernization of electrical interlocking at Ugolnaya station in the Kaliningrad region. The operational part of signaling and communication was prepared.