Author(s)

T. Kobayashi, O. Iba, H. Inage & Y. Tateishi

Abstract

Track circuits and wayside signals have kept safety of railway system for a long time. With a help of this signaling system, we have improved safety and increased traffic volume. However, it is necessary to lay large amount of metallic cable along railroad. Initial cost and maintenance cost are extremely large in such a signaling system. Also, replacement of large amount of equipment is necessary at a system change. In order to avoid such unnecessary expense, we are now developing some new traffic control systems based on wireless communication system with a view to constructing a railway system toward the 21st century. We are developing a new system aiming at practical use in near future. This

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