I. Introduction
Traffic Lights Controllers (TLC) are devices that define a road intersection behavior by controlling when each traffic light becomes red or green and for how long. These devices traditionally use a static plan: switching sequence and timings are pre-determined and are independent of the traffic conditions. Adapting the order and duration of the green lights in function of the actual traffic could prevent for example leaving a green light when no vehicles wants or is able to cross the intersection. Such reactive strategies shall improve significantly the road network performance, reducing the traffic load as well as the users journey time.