Rail guided vehicle system
Railway coded track circuit apparatus and method utilizing fiber
Railway track circuits
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
Train detection
Train detection apparatus, train-location detection system...
Train detection circuit
Train location system and method
Train position detection system
Transit vehicle shunt determination
Vehicle position indicator with radar interrogation each of spac
Wheel detection and classification system for railroad data...