The article presents the materials of the second section of unpublished manuscript of a monograph «Development of signaling, interlocking and blocking devices on Russian railways», that was written by N. V. Lupal, the firs t head of the department of Automation and Remote control on Railway of Leningrad Institute of Railway transport Engineers. The section highlights the formation of science and technology within the train traffic control.
train traffi c control, design, bridge construction, electrical engineering, telegraph, signaling