Railcar maintenance management system
Railroad grade crossing motorist warning system
Real time messaging interface for vehicle detection sensors
Recognition system and recognition method for non-contact IC car
Reflector-warning triangle
Remote control portable traffic control device and system
Remote control train warning apparatus
Remote controlled portable traffic signals
Remotely-controlled traffic control system
Reversible highway sign warning lights
RF tag based system and method for drive-through applications
RFID intelligent traffic signaling
Road antenna controlled on the basis of receiving rate
Road cone
Road traffic control system with alternating nonstop traffic flo
Road traffic monitoring system
Road traffic signalling system
Road traffic weather observation system and self-emission...
Road/vehicle communication method and device
Roadside radio apparatus