Continuous speed checking process for a powered vehicle and appa
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...
Electronic track current switching relay system
Fail-safe block control system for driverless vehicles
Fail-safe cab signal process for transmitting information by hig
Fail-safe decoder for digital track circuits
Fail-safe magnetic sensing arrangement