Communication and Localization in Urban Traffic Environments using IEEE 802.15.4-based WSN
R Baumbach, Richard Weber, Oliver Michler · 20th ITS World CongressITS Japan · 2013
The constantly growing amount of vehicles in urban areas leads to a more saturated condition at signalized intersections. Microscopic traffic flow optimization offers a probate solution to reducing queue length and travel time, thus increasing overall traffic flow. Gathering sufficient input data for the optimization process is dependent on the available hardware and the used mode of transport. In this paper the authors suggest the usage of energy efficient and inexpensive 802.15.4-based wireless sensor networks (WSN) as a technology to be applicable to a broad variety of modes of transport in urban traffic environments. The WSN-nodes are capable of transmitting traffic telematics information as well as achieving a distance measurement between two equally equipped nodes, which in turn is used for positioning. The authors present testing data that shows lane-level positioning using the proposed hardware while still maintaining a communication link and transmitting data from the traffic light system to the vehicle.