Energy efficient traffic management through street lighting

The project aims to demonstrate how intelligent LED (Light Emitting Diodes) street lighting with integrated intelligent traffic sensor for activity and traffic detection can be integrated with the traffic light control system, to reduce the CO₂ emission in intersections while saving energy for street lightning. The intelligent traffic sensor will be able to detect and count the vehicles in an intersection and provide an estimate of the speed of each vehicle. The traffic data is transmitted from the sensor to the LED fixture that will adjust the light intensity in the street according to types of the traffic. If the detected activity in the street are categorized as walking persons or bicycles, the light intensity of the LED fixtures is increased to ensure the saftey for these types of road users. Furthermore, the traffic data are transmitted via the integrated power line communication in the LED fixture to the traffic controller which utilizes the data to control the traffic in an energy efficient way. This adjustment will result in fewer traffic stops in the intersection, thus reducing the amout of accelerations/de-accelerations which will reduce the CO₂ emission