Safety strobe light
Satellite supported traffic signal controller
School crossing guard, security system
Self-erecting traffic control device
Self-illuminant delineator and delineator system by use thereof
Short range radio continuous communication method and system
Signal light for railroads or the like
Signalling means
Simulating the presence of a large motor vehicle in an inductive
Siren detector
Smart cross programmable vehicle and pedestrian signage with ele
Smart traffic signal system
Solar-powered wireless crosswalk warning system
Solar-powered wireless crosswalk warning system
Sound pattern discrimination system
Stand for a remotely operated road sign
Street lamp system
Structure for a car sensing infrared communication device...
System and method for automatically adjusting traffic light
System and method for configuring an electronically...