Can freeway traffic volume information facilitate urban accessibility assessment?. Case study of the city of St. Louis.

Shu Yang, Xuan Liu, Yao-jan Wu, John Woolschlager, Sarah L. Coffin

Research output: Contribution to journalArticle

5 Scopus citations


In urban contexts, accessibility measures are often utilized to represent the interactions among land use, transport and people's trips to services and other facilities. Accessibility is generally evaluated using conventional traffic measures such as travel time and distance, but traffic volume, which is a product of the travel trips induced by people's needs, may also be positively related to accessibility. This study tests the hypothesis "can freeway traffic volume information facilitate urban accessibility assessment?" Traffic volume based accessibility models are proposed to investigate this relationship and test the hypothesis. The results indicate that the answer to this question is a qualified "yes", as there is a statistically significant relationship between traffic volume differences and accessibility. The coefficients of the models can potentially be used as a reference to guide the urban planning process. The limitations of the proposed models can be addressed by deploying Intelligent Transportation Systems (ITS) traffic sensors on ramps and arterial roadways.

Original languageEnglish (US)
Pages (from-to)65-75
Number of pages11
JournalJournal of Transport Geography
Publication statusPublished - Apr 1 2015



  • Accessibility
  • Facility opportunity
  • Freeway traffic volume
  • GIS analysis
  • Ramp volume difference

ASJC Scopus subject areas

  • Environmental Science(all)
  • Geography, Planning and Development
  • Transportation

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