Speed limits, speed selection and network equilibrium

Hai Yang, Hongbo Ye, Xinwei Li, Bingqing Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)


This paper investigates the local and global impact of speed limits by considering road users' non-obedient behavior in speed selection. Given a link-specific speed limit scheme, road users will take into account the subjective travel time cost, the perceived crash risk and the perceived ticket risk as determinant factors for their actual speed choice on each link. Homogeneous travelers' perceived crash risk is positively related to their driving speed. When travelers are heterogeneous, the perceived crash risk is class-specific: different user classes interact with each other and choose their own optimal speed, resulting in a Nash equilibrium speed pattern. With the speed choices on particular roads, travelers make route choices, resulting in user equilibrium in a general network. An algorithm is proposed to solve the user equilibrium problem with heterogeneous users under link-specific speed limits. The models and algorithms are illustrated with numerical examples.

Original languageEnglish
Pages (from-to)260-273
Number of pages14
JournalTransportation Research Part C: Emerging Technologies
Publication statusPublished - 1 Feb 2015


  • Safety
  • Speed limit
  • Speed selection
  • Traffic equilibrium
  • Traffic network

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Transportation
  • Computer Science Applications


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