Patent ID: 7201350

Claim:
A signaling safety system having an on-ground segment and an on-train segment, wherein: said on-train segment comprises, an on-train radio transmitter-receiver that is coupled for radio communication with said on-ground segment; an on-train additional communication device for transmitting train position information to said on-ground segment when the train approaches to a specific position range; an on-train controller for receiving moveable area boundary information for the train from said on-ground segment, via either said on-train radio transmitter-receiver or said on-train additional communication device, and conducting speed control of the train based on said boundary information; and said on-ground segment comprises, an on-ground radio transmitter-receiver that is coupled for radio communication with said on-train segment; an on-ground additional communication device for receiving said train position information from said on-train segment when said train approaches the specific range; and an on-ground train controller having (i) a train detection processor for detecting presence of the train based on said position information, and (ii) a stop position generation unit for generating moveable area boundary information, wherein said generating boundary information is communicable to said on-train segment via either of said on-ground radio transmitter-receiver or said on-ground additional communication device.