A system for supervising and controlling the movement of a railway vehicle is provided, wherein a plurality of wayside controller units are each distributed to a plurality of wayside controller locations by a multi-access carrier, such as a fiber LAN or IEEE 802.3 Ethernet, for instance, such that supervisory...http://www.google.com/patents/US6032905?utm_source=gb-gplus-sharePatent US6032905 - System for distributed automatic train supervision and control
