Coded track circuit repeater having standby mode
Coded track circuit with diagnostic capability
Combination frequency loop coupling for railway track signalling
Communications-based vehicle control system and method
Continuous speed checking process for a powered vehicle and appa
Control systems for controlling the passage of vehicles
Conveyor carriage control system
Decoupling arrangement for non-insulated AC track circuits in ra
Device for detecting the unbalance between the two fractions of
Device for preventing collision of trains
Device for preventing traction power harmonic interference on hi
Device for the detection of the position of a railway vehicle
Device for the protection of track relays from electrical distur
Directional wheel detector
Distributed positive train control system
Dual frequency track circuit
Electrical block separating joints for railway signaling systems
Electrical detective circuits
Electrical protective circuits
Electronic code generating circuit for use in railroad...