Vehicle presence detection system
Vehicle protection system
Vehicle speed control apparatus and method
Vehicle speed/distance pofile controller
Vehicle timing system
Vehicle train routing apparatus and method
Vehicle train tracking apparatus and method
Vehicle velocity limit control method and apparatus
Vehicle weighing system
Vehicle weight responsive means
Virtual block control system for railway vehicle
Vital apparatus for determining train travel direction
Vital electronic code generator
Vital optical coupler circuit arrangement for railroad...
Vital power varistor circuit for railroad signaling systems
Vital protection arrangement for railroad track circuits
Vital railway signal link with photo-emission means
Vital rate decoder
Vital rate decoder
Vital switch control circuit