Integrating the Directional Effect of Traffic into Geostatistical Approaches for Travel Time Estimation

Daoqin Tong, Wei Hua Lin, Alfred Stein

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


With the direct linkage to a travel map system, geostatistical techniques have been recently adopted for urban travel time estimation. Some important traffic characteristics of urban transportation networks, however, have not been adequately addressed in these studies. As an improvement over the existing studies, this study incorporates the directional effect of traffic into several commonly used geostatistical models for travel time estimation. We show that model performance can be significantly enhanced when flow specific properties are explicitly considered in constructing the associated interpolation models. The developed methodology is applied to a set of traffic data collected in the city of Tucson, Arizona during the rush hours. Results demonstrate an average of 20 % reduction in RMSE compared with those by the traditional approaches.

Original languageEnglish (US)
Pages (from-to)101-112
Number of pages12
JournalInternational Journal of Intelligent Transportation Systems Research
Issue number3
StatePublished - Sep 1 2013
Externally publishedYes


  • Directional effect
  • Geostatistical models
  • Travel time estimation
  • Variogram

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Neuroscience(all)
  • Information Systems
  • Automotive Engineering
  • Aerospace Engineering
  • Computer Science Applications
  • Applied Mathematics


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