Date Added: Aug 2012
Congestion in a transportation network is usually the result of either an increase in traffic demand, i.e. the desire of drivers to use the transportation network, or a decrease in traffic supply, i.e. the traffic capacity, which is affected by weather conditions, incidents, etc. In either case, congestion reduces the efficiency of the transportation network and increases the travel time of vehicles in the network. In this paper, the authors leverage the benefits that Vehicle-To-Vehicle (V2V) and Vehicle-To-Infrastructure (V2I) communications provide in Intelligent Transportation Systems (ITS), to optimize traffic assignment in transportation networks. In particular, they formulate a convex optimization problem for a transportation network and minimize network criticality, a new graph metric that measures centrality.