Macroscopic fundamental diagrams for train operations - are we there yet?

The authors discuss the concept and applicability of macroscopic descriptions of operations for railway systems. The concept of macroscopic or network fundamental diagram (MFD or NFD) for vehicular traffic in an urban network has been recently found empirically. The notion of MFD/NFD has been exploited to understand the real-time traffic state and the relevant control actions to keep traffic flow smooth. It has been used predominantly as a monitoring tool in traffic control strategies, which helps mitigate congestion. The railway mode has the same goals of maximizing speed and flow, though it has many substantial differences with vehicular traffic. The authors investigate the theoretical possibility to derive macroscopic representations of the traffic flow theory macroscopic variables; i.e. speed, density, flow, for railway traffic. The authors do this with closed formula expression when possible, or with simulation tools when the complex setup does not allow any analytical solution. The implications for applicability of macroscopic representations in railways or railway-like systems are discussed.


  • English

Media Info

  • Media Type: Web
  • Features: Figures; References;
  • Pagination: 8p
  • Monograph Title: 2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS 2019)

Subject/Index Terms

Filing Info

  • Accession Number: 01746545
  • Record Type: Publication
  • ISBN: 9781538694855
  • Files: TRIS
  • Created Date: Jul 23 2020 4:16PM