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Estimation of Vehicle Trajectories with Locally Weighted Regression
(Trafik och logistik)
2007 (English)In: Transportation Research Record, ISSN 0361-1981, no 1999, 161-169 p.Article in journal (Refereed) Published
Abstract [en]

Vehicle trajectory data are important for calibrating driver behavior models (e.g., car following, acceleration, lane changing, and gap acceptance). The data are usually collected through imaging technologies, such as video. Processing these data may require substantial effort, and the resulting trajectories usually contain measurement and processing errors while also missing data points. An approach is presented to the processing of position data to develop vehicle trajectories and consequently speed and acceleration profiles. The approach uses local regression, a method well suited for mapping highly nonlinear functions. The proposed methodology is applied to a set of position data. The results demonstrate the value of the method to development of vehicle trajectories and speed and acceleration profiles. The conducted sensitivity analysis also shows that the method is rather robust regarding measurement errors and missing values.

Place, publisher, year, edition, pages
Transportation Research Board , 2007. no 1999, 161-169 p.
National Category
Civil Engineering Computer and Information Science
URN: urn:nbn:se:kth:diva-10899DOI: 10.3141/1999-17ISI: 000252733200018OAI: diva2:228429
QC 20110218Available from: 2009-07-31 Created: 2009-07-31 Last updated: 2011-02-18Bibliographically approved

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Koutsopoulos, Haris N.
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