Evaluation of Information Applications of a Self-Organizing Distributed Traffic Information System for a Large-Scale Real-World Traffic Network

This article presents an evaluation of the system performance of a proposed self-organizing, distributed traffic information system based on vehicleto-vehicle information-sharing architecture. Using microsimulation, several information applications derived from this system are analyzed relative to the effectiveness and efficiency of the system to estimate traffic conditions along each individual path in the network, to identify possible incidents in the traffic network, and to provide rerouting strategies for vehicles to escape congested spots in the network. A subset of vehicles in the traffic network is equipped with specific intervehicle communication devices capable of autonomous traffic surveillance, peerto-peer information sharing, and self-data processing. A self-organizing traffic information overlay on the existing vehicular roadway network assists their independent evaluation of route information, detection of traffic incidents, and dynamic rerouting in the network based both on historical information stored in an in-vehicle database and on real-time information disseminated through intervehicle communications. A path-based microsimulation ∗To whom correspondence should be addressed. E-mail: wwrecker@ uci.edu. model is developed for these information applications and the proposed distributed traffic information system is tested in a large-scale real-world network. Based on simulation study results, potential benefits both for travelers with such equipment as well as for the traffic system as a whole are demonstrated.