Each traffic light controlled intersection has an intersection control agent that collects information from the sensor nodes.An intersection control agent manages its intersection by controlling its traffic lights.Multiple intersection agents can exchange information among themselves to control a wider area.

validating the application of occupancy sensor networks for lighting control-19

In this paper, we propose a novel decentralized traffic light control using wireless sensor network.

The system architecture is classified into three layers; the wireless sensor network, the localized traffic flow model policy, and the higher level coordination of the traffic lights agents.

The wireless sensors are deployed on the lanes going in and out the intersection.

These sensors detect vehicles' number, speed, etc.

The use of wireless networks in vehicular environments has grown exponentially.

However, it is highly important to analyze radio propagation prior to the deployment of a wireless sensor network in such complex scenarios.

In this work, the radio wave characterization for ISM 2.4 GHz and 5 GHz Wireless Sensor Networks (WSNs) deployed taking advantage of the existence of traffic light infrastructure has been assessed.

and send their data to the nearest Intersection Control Agent (ICA) which, determines the flow model of the inter-section depending on sensors' data (e.g., number of vehicles approaching a specific intersection).

Coping with dynamic changes in the traffic volume is one of the biggest challenges in intelligent transportation system (ITS).

Our main contribution is the real-time adaptive control of the traffic lights.

Our aim is to maximize the flow of vehicles and reduce the waiting time while maintaining fairness among the other traffic lights.