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Estimation of Traffic Dynamics Models with Machine Learning Methods
KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301). (Trafik och logistik)
2006 (English)In: Transportation Research Record, ISSN 0361-1981, Vol. 1965, 103-111 p.Article in journal (Refereed) Published
Abstract [en]

Speed-density relationships are a classic way of modeling stationary traffic relationships. Besides offering valuable insight into traffic stream flows, such relationships are widely used in dynamic traffic assignment (DTA) systems. In this research, an alternative paradigm for traffic dynamics models, appropriate for traffic simulation models and based on machine-learning approaches such as k-means clustering, k-nearest-neighborhood classification, and locally weighted regression is proposed. Although these models may not provide as much insight into traffic flow theory as speed-density relationships do, they allow for easy incorporation of additional information to speed estimation and hence may be more appropriate for use in DTA models, especially simulation-based models. This paper (with data from a network in Irvine, California) demonstrates that such machine-learning methods can considerably improve the accuracy of speed estimation.

Place, publisher, year, edition, pages
2006. Vol. 1965, 103-111 p.
Keyword [en]
America, North America, United States, California, Case study, Regression, Density, Simulation model, Traffic assignment, Modeling, Speed, Learning, Dynamic model, Traffic flow, Road traffic
National Category
Transport Systems and Logistics
URN: urn:nbn:se:kth:diva-10886DOI: 10.3141/1965-11OAI: diva2:228397
QC 20111011Available from: 2009-07-30 Created: 2009-07-30 Last updated: 2011-10-11Bibliographically approved

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Koutsopoulos, Haris N.
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Transport and Economics (closed 20110301)
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