Urban Road Network Macroscopic Fundamental Diagram Analysis Under Vehicular Ad-Hoc Networks Environment

This research aims to analyze the urban road network macroscopic fundamental diagram under vehicular ad-hoc networks (VANETs) environment. The macroscopic (network) fundamental diagram (MFD or NFD), which relates network space–mean density and flow, has been shown to be existed in urban network with homogeneous traffic conditions. Although MFD represents the network performance and is an important indicator for traffic management, the practical application of the MFD is limited to the fact that the homogenous traffic condition is generally not observed in the real network. However, with wireless communication technology, VANETs provide such environment and therefore could be evaluated by MFD. VANETs are networks in which each node is a vehicle. The adjacent vehicles in VANETs are equipped with wireless communication devices. Under VANETs environment, the road network system provides communications not only between individual vehicles, but also between vehicles and nearby fixed equipment and roadside facilities. Therefore, the vehicles in VANETs environment receive real-time road information, thus improve traveling safety and efficiency. The primary object of this study is to explore whether a well-defined MFD exists in urban road network under VANETs environment. To analysis the MFD under VANETs environment, a simulation test is conducted with gird road network in NS-3 simulation platform. The MFD of the simulated network is presented in the study. The simulation results are compared between different wireless communication scenarios. The results show that the urban road network performs a MFD under VANETs environment. Meanwhile, wireless communications under VANETs environment has an impact on the shape of the MFD for the simulated road network.

Language

  • English

Media Info

  • Media Type: Print
  • Pagination: pp 361-364
  • Monograph Title: Celebrating 50 Years of Traffic Flow Theory: A Symposium. August 11-13, 2014, Portland, Oregon
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01604717
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jul 14 2016 3:54PM