Instantaneous information propagation in a traffic stream through inter-vehicle communication

Abstract

The advancement of wireless communication technology has made possible the consideration of inter-vehicle communication as a foundation for developing decentralized advanced transportation information systems that would function as a sort of "internet on the road". In this paper, we discuss the reliability of inter-vehicle communication in a traffic stream, dependent on the distribution of equipped vehicles. With the assumption that information propagation is instantaneous compared to vehicle movements, the reliability is measured by the probability of success for information to travel beyond a location; stochastic models are presented for both uniform and general traffic streams. In the models, the traffic stream is divided into a series of cells based on the transmission range, the structure of possible most-forward-within-range communication chains is clarified, the probabilities for information to travel to and beyond a vehicle at a certain hop are computed regressively, and the lower bound of the absolute success rate for information to travel beyond a point is determined. Based on the models, we examine the performance of information propagation for different penetration rates, transmission ranges, and traffic scenarios that include gaps and shock waves. Finally, some implications and future extensions of this effort are discussed.

An analytical model of multihop connectivity of inter-vehicle communication systems

“…In the last cell, consecutive nodes is called a hop. For detailed regulatory properties of nodes and hops, please refer to (Jin and Recker, 2006).…”

Advanced Driver Assistance Systems from Autonomous to Cooperative Approach

“…One potential application of inter-vehicle communication is to relay hazard information from a preceding vehicle to following vehicles, in an effort to prevent multi-vehicle accidents, particularly when in condition of poor visibility (Jin and Recker, 2006). Inter-vehicle communication can also be used for an on-board sensor equipped vehicle to transmit relevant information to non-equipped vehicles (e.g.…”

“…The system would become very complicated and expensive to implement. Vehicle-vehicle communication makes it possible to 'detect' threats from any direction and range for applications such as forward collision warning, intersection collision warning, lane change collision warning (Ioannou and Stefanovic, 2005;Jin and Recker, 2006). Moreover, a radio is significantly cheaper than the suite of sensors required for giving 360 degree awareness.…”

Modeling Connectivity of Inter-Vehicle Communication Systems with Road-Side Stations

“…In [10,11,12], vehicle movements are considered by using various traffic simulators. In [13], a new framework of instantaneous information propagation through IVC was proposed, and the assumption of instantaneous information propagation was supported by further analysis in [14,15]. In these studies, however, no road-side stations were included.…”

“…That is, in literature, there lacks systematic approaches to modeling the multihop connectivity of an IVC system with roadside stations. In this paper, we attempt to develop a model for evaluating impacts of road-side stations on connectivity of an IVC system with similar conceptual framework of [13]. In this model, in addition to the distribution pattern of vehicles, market penetration rate of wireless communication units in vehicles, and transmission range, the distribution pattern of road-side stations would significantly affect the performance in connectivity of the IVC system.…”