Data-driven algorithms for real-time adaptive tuning of offsets in coordinated traffic signal systems

Douglas Gettman, Steven G. Shelby, Kenneth L Head, Darcy M. Bullock, Nils Soyke

Research output: Chapter in Book/Report/Conference proceedingChapter

29 Citations (Scopus)

Abstract

A real-time adaptive control algorithm for tuning traffic signal offsets in a coordinated traffic signal system is presented. The algorithm described here is used in the Adaptive Control Software-Lite (ACS-Lite) adaptive control system. The algorithm uses a statistical average flow profile of traffic on the coordinated approaches to an intersection to assess when vehicles are arriving during the signal cycle. Alternative offset adjustments are evaluated by calculating how much of this flow profile is being captured by the green phase serving each coordinated approach. The algorithm considers the impact of the offset adjustment on traffic at the local intersection as well as on traffic at adjacent intersections that are also under ACS-Lite control. Simulation tests have quantitatively shown that this tuning approach can improve arterial progression performance relative to the quality of the initial baseline fixed offsets used in a traffic pattern. Several issues and areas for improvement of the algorithm are also identified and discussed.

Original languageEnglish (US)
Title of host publicationTransportation Research Record
Pages1-9
Number of pages9
Edition2035
DOIs
StatePublished - 2007

Publication series

NameTransportation Research Record
Number2035
ISSN (Print)03611981

Fingerprint

Traffic signals
Signal systems
Tuning
Adaptive control systems

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Gettman, D., Shelby, S. G., Head, K. L., Bullock, D. M., & Soyke, N. (2007). Data-driven algorithms for real-time adaptive tuning of offsets in coordinated traffic signal systems. In Transportation Research Record (2035 ed., pp. 1-9). (Transportation Research Record; No. 2035). https://doi.org/10.3141/2035-01

Data-driven algorithms for real-time adaptive tuning of offsets in coordinated traffic signal systems. / Gettman, Douglas; Shelby, Steven G.; Head, Kenneth L; Bullock, Darcy M.; Soyke, Nils.

Transportation Research Record. 2035. ed. 2007. p. 1-9 (Transportation Research Record; No. 2035).

Research output: Chapter in Book/Report/Conference proceedingChapter

Gettman, D, Shelby, SG, Head, KL, Bullock, DM & Soyke, N 2007, Data-driven algorithms for real-time adaptive tuning of offsets in coordinated traffic signal systems. in Transportation Research Record. 2035 edn, Transportation Research Record, no. 2035, pp. 1-9. https://doi.org/10.3141/2035-01
Gettman D, Shelby SG, Head KL, Bullock DM, Soyke N. Data-driven algorithms for real-time adaptive tuning of offsets in coordinated traffic signal systems. In Transportation Research Record. 2035 ed. 2007. p. 1-9. (Transportation Research Record; 2035). https://doi.org/10.3141/2035-01
Gettman, Douglas ; Shelby, Steven G. ; Head, Kenneth L ; Bullock, Darcy M. ; Soyke, Nils. / Data-driven algorithms for real-time adaptive tuning of offsets in coordinated traffic signal systems. Transportation Research Record. 2035. ed. 2007. pp. 1-9 (Transportation Research Record; 2035).
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