TRAC: an architecture for real-time dissemination of vehicular traffic information

ABSTRACT

Traffic congestion is a major cause of concern in many cities. A real-time information dissemination system announcing current traffic conditions to travelers is increasingly becoming a necessity in this context. The recent DSRC research initiative[1] envisions a deployment of DSRC access points (APs) along the road side to enable Vehicle to Roadside Communication (VRC) for this purpose. However, even if such an infrastructure is deployed on the roadside, it is not trivial to design a system that distributes on-demand traffic information. Existing solutions employ a centrialized design where the traffic information is stored at a central database and the vehicles then query the database for information of their interest. Such solutions are simply not scalable due to the huge volume of queries the central database would have to handle. Moreover, such a communication architecture does not take into account the fact that traffic related queries are location sensitive and that the sources for a particular query also tend to be localized.

REFERENCES

• 1: DSRC WG, http://grouper.ieee.org/groups/scc32/dsrc/
• 2: Vinod Muthusamy , Milenko Petrovic , Hans-Arno Jacobsen, Effects of routing computations in content-based routing networks with mobile data sources, Proceedings of the 11th annual international conference on Mobile computing and networking, August 28-September 02, 2005, Cologne, Germany [doi>10.1145/1080829.1080840]
• 3: Rahul Mangharam , Daniel S. Weller , Daniel D. Stancil , Ragunathan Rajkumar , Jayendra S. Parikh, GrooveSim: a topography-accurate simulator for geographic routing in vehicular networks, Proceedings of the 2nd ACM international workshop on Vehicular ad hoc networks, September 02-02, 2005, Cologne, Germany [doi>10.1145/1080754.1080764]

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.3 Network Operations

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.1 Network Architecture and Design
          Subjects: Wireless communication
      C.2.4 Distributed Systems
          Subjects: Distributed applications
  C.3 SPECIAL-PURPOSE AND APPLICATION-BASED SYSTEMS
      Subjects: Signal processing systems

General Terms:
Design, Management