Abstract: A control arrangement for a traffic light includes at least one video camera and at least one thermal imager, both detecting whether there is a motor vehicle in the lane of the roadway approaching the traffic light. An electronic processor is communicatively coupled to the at least one video camera and to the at least one thermal imager. The electronic processor receives a video signal from at least one video camera indicative of whether there is a motor vehicle in a lane of a roadway approaching the traffic light. The electronic processor also receives a thermal signal from at least one thermal imager indicative of whether there is a motor vehicle in a lane of a roadway approaching the traffic light. The electronic processor controls whether the traffic light is ON or OFF dependent upon both the video signal and the thermal signal.

Abstract: Devices associated with a lighting application can utilize multiple communication technologies for communicating with multiple devices that have different power consumption constraints and different transmission ranges. Communications and signaling can be managed to extend battery life. A battery-powered occupancy sensor can communicate occupancy information via a radio. The radio can be placed in sleep mode to preserve battery life. A communication node in the application can support intra-network and inter-network communications, for example with remote devices and systems.

Abstract: Devices associated with a lighting application can utilize multiple communication technologies for communicating with multiple devices that have different power consumption constraints and different transmission ranges. Communications and signaling can be managed to extend battery life. A battery-powered occupancy sensor can communicate occupancy information via a radio. The radio can be placed in sleep mode to preserve battery life. A communication node in the application can support intra-network and inter-network communications, for example with remote devices and systems.