Dynamic traffic control system for over-saturated traffic: Comparison of adaptive control strategies

Hong K. Lo, Y. C. Chan, Andy H F Chow, Hing Keung William Lam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


This study developed a dynamic traffic control system designated as Dynamic Intersection Signal Control Optimization (DISCO). DISCO considers the entire Fundamental Diagram of traffic flow, which is essential for controlling congested and transient traffic. As a dynamic model, DISCO works with time-variant traffic patterns and derives dynamic adaptive timing plans. In this study, we applied DISCO to a congested network in Hong Kong and compared the performance of various control strategies enabled by DISCO. The results showed that DISCO outperformed the existing plans by more than 50% in terms of overall delay reduction. Moreover, DISCO performed best under the most flexible control scheme of "variable green -no cycle" strategy. DISCO shows promise as a new approach for demand-responsive traffic control.
Original languageEnglish
Title of host publicationProceedings of the Conference on Traffic and Transportation Studies, ICTTS
Publication statusPublished - 1 Dec 2002
Event3rd International Conference on Traffic and Transportation Studies, ICTTS 2002 - Guilin, China
Duration: 23 Jul 200225 Jul 2002


Conference3rd International Conference on Traffic and Transportation Studies, ICTTS 2002

ASJC Scopus subject areas

  • Mechanical Engineering

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