Integrating public transit signal priority into max-pressure signal control: Methodology and simulation study on a downtown network

Te Xu, Simanta Barman, Michael W. Levin, Rongsheng Chen, Tianyi Li

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Max-pressure signal control has been analytically proven to maximize the network throughput and stabilize queue lengths whenever possible. Since there are many transit lines operating in the metropolis, the max-pressure signal control should be extended to multi-modal transportation systems to achieve more widespread usage. The standard max-pressure controller is more likely to actuate phases during high-demand approaches, which may end up ignoring the arrival of buses, especially in bus rapid transit. In this paper, we propose a novel max-pressure signal control that considers transit signal priority of bus rapid transit systems to achieve both maximum stability for private vehicles and reliable transit service. This study revises the original max-pressure control to include constraints that provide priority for buses. Furthermore, this policy is decentralized which means it only relies on it relies only on the local conditions of each intersection. We set the simulation on the real-world road network with bus rapid transit systems. Numerical results show that the max-pressure signal control which considers transit signal priority can still achieve maximum stability compared with other signal control integrated with transit signal priority. Furthermore, the max-pressure control reduces private vehicle travel time and bus travel time compared to the current signal control.

Original languageEnglish (US)
Article number103614
JournalTransportation Research Part C: Emerging Technologies
Volume138
DOIs
StatePublished - May 2022

Bibliographical note

Funding Information:
The authors gratefully acknowledge the support of the National Science Foundation , Award No. 1935514 and the support of Hsiao Shaw-Lundquist Fellowship of the University of Minnesota China Center. The authors also thanked the anonymous reviewers for their precious advice during the review process. All authors reviewed the results and approved the final version of the manuscript.

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Bus rapid transit
  • Max-pressure control
  • Maximum stability
  • Public transit
  • Transit signal priority

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