Study of safety and efficient routing for intelligent transportation system

In this paper, a novel dispatching and routing scheme of Vehicle Route Guidance Systems (VRGS) is proposed for safe and efficient transportation. The application scenario focuses on the cooperative dispatching and route decision of vehicles within a specific area consisting of streets and several intersections. In addition to computing a specific routing path for the arrival vehicle according to its destination and safety considerations at intersections, the proposed scheme provides a detour mechanism triggered by traffic jam. The performance is analyzed by measuring the time required for vehicles to travel in this area, the average moving speed of the vehicles, the frequency of the detour routes, etc. The experimental results show that the proposed scheme can effectively route the vehicles without any collision and it also demonstrates a quite good performance in above measurement criteria.

I. Introduction

Driven by the deployment of Intelligent Transport Systems (ITS), more and more applications, which focus on efficient and safe transportation by using communication technologies, have emerged [1], [2], [3], [4], [5]. A variety of communication technologies for Dedicated Short Range Communications (DSRC) [6] were proposed for exchanging vehicular status. And IEEE 802.11p, adding wireless access in the vehicular environment (WAVE), is working on standard specification. By combining intelligent infrastructure with inter-vehicle communication, road safety has become an important application for ITS. The road safety control system not only can prevent intersection collisions but also can alleviate traffic jams. Thus, the VRGS, when comparing with the tradition routing algorithms, deals with the issue of effective routing under the constraint of collision avoidance of vehicles.