Power and impedance control methods for model railroads
Process and system for measuring axle and bearing temperatures
Protection device to prevent train incursions into a...
Protective safety apparatus for railway cars
Radio frequency coupler for communication between adjacent railw
Radio-based electro-pneumatic control communications system
Rail communications system
Railroad air brake system
Railroad car sensing system
Railroad car wheel bearing heat signal processing circuit
Railroad communication system
Railroad flat wheel detectors
Railroad hot box detector
Railroad hotbox indicator
Railroad in-cab signaling with automatic train stop enforcement
Railroad telemetry and control systems
Railroad telemetry and control systems
Railroad worker warning system for train conductors
Railway car retarder system
Railway safety system using intensity of current