Link overload minimization versus reserve capacity maximization in the network design problem

Anthony Chen, Piya Chootinan, S. C. Wong

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

1 Citation (Scopus)


This paper adopts a new capacity-reliability index recently introduced by Chootinan, Wong, and Chen (Journal of Advanced Transportation 39, 247-270, 2005) to design new reserve capacity models for a signal-controlled road network. This new index explicitly accounts for the probability that all network links would be operated below their capacities when serving different traffic patterns deviating from the average condition. Specifically, two new reserve capacity models are formulated as a bi-level program using this new capacity-reliability index as an objective function. The first model is based on the reserve capacity maximization model of a signal-controlled road network proposed by Wong and Yang (Transportation Research 31B, 397-402, 1997). The second model is based on the generalized reserve capacity definition proposed by Gao and Song (Transportation Research 36B, 313-323, 2002) by optimizing both signal settings and capacity enhancements. In both models, instead of maximizing the reserve capacity as a performance measure, we minimize the link overload while determining the optimal design under limited resources. In addition, we compare the reliability-based design with that of the reserve capacity model to gain insights of the deterministic and stochastic network design problems. The results show that the reliability-based design can deliver a more reliable network with a slightly lower reserve capacity compared to that of the deterministic reserve capacity model.
Original languageEnglish
Title of host publicationProceedings of the 11th International Conference of Hong Kong Society for Transportation Studies
Subtitle of host publicationSustainable Transportation
Number of pages10
Publication statusPublished - 1 Dec 2006
Externally publishedYes
Event11th International Conference of Hong Kong Society for Transportation Studies: Sustainable Transportation - Kowloon, Hong Kong
Duration: 9 Dec 200611 Dec 2006


Conference11th International Conference of Hong Kong Society for Transportation Studies: Sustainable Transportation
Country/TerritoryHong Kong

ASJC Scopus subject areas

  • Automotive Engineering
  • Civil and Structural Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality
  • Transportation

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