REMOTE SIGNALING SYSTEM FOR TRAIN CONTROL

A remote signaling system is described for the monitoring and control of one or more moving trains from a remote wayside location by means of a vehicle carried antenna and signal transmitter coupled with a track-side cable and designed to introduce a movement variable periodic phase shift into the coupled signals from the train back to the wayside located receiver to enable the desired train position monitoring function. The train carried antenna is magnetically coupled to this track-side cable arrangement such that undesired signal changes due to train vehicle rock and sway motion are minimized, and signal transmission difficulties introduced by the physical position variation of the track-side cable wires relative to the track path are minimized. The track-side cable comprises two closely spaced signal transmission lines each having a crossover at predetermined length intervals, with the physical crossover of each transmission line being equally spaced and substantially half-way between the adjacent physical crossovers of the other transmission line.