Title: A vehicle-to-infrastructure communication based algorithm for urban traffic control,
Abstract: We present in this paper a new algorithm for urban traffic light control with
mixed traffic (communicating and non communicating vehicles) and mixed
infrastructure (equipped and unequipped junctions). We call equipped junction
here a junction with a traffic light signal (TLS) controlled by a road side
unit (RSU). On such a junction, the RSU manifests its connectedness to equipped
vehicles by broadcasting its communication address and geographical
coordinates. The RSU builds a map of connected vehicles approaching and leaving
the junction. The algorithm allows the RSU to select a traffic phase, based on
the built map. The selected traffic phase is applied by the TLS; and both
equipped and unequipped vehicles must respect it. The traffic management is in
feedback on the traffic demand of communicating vehicles. We simulated the
vehicular traffic as well as the communications. The two simulations are
combined in a closed loop with visualization and monitoring interfaces. Several
indicators on vehicular traffic (mean travel time, ended vehicles) and IEEE
802.11p communication performances (end-to-end delay, throughput) are derived
and illustrated in three dimension maps. We then extended the traffic control
to a urban road network where we also varied the number of equipped junctions.
Other indicators are shown for road traffic performances in the road network
case, where high gains are experienced in the simulation results.