Position detector for track mounted surveillance systems
Position detector for track mounted surveillance systems
Process and system for localizing a mobile unit which travels on
Rail guided vehicle system
Railroad maintenance-of-way personnel warning system apparatus a
Railway coded track circuit apparatus and method utilizing fiber
Railway track circuits
Safety system for railroad personnel
Signaling safety system
Sonic track condition determination system
Speed indication system
System for detecting trains
System for selectively determining the location of a railway car
Tactile and audible warning system for railroad workers
Tactile and audible warning system for railroad workers
Train detection
Train detection apparatus, train-location detection system...
Train detection circuit
Train location system and method
Train position detection system