Estimation of turning movement proportions from partial sets of traffic counts at intersections

Gary A Davis, Chang Jen Lan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Estimated turning movement proportions are used in a number of traffic simulation and traffic control procedures in order to predict the turning movement flows at intersections. Historically, these proportions have been estimated by manual counting, but the ongoing deployment of real-time, adaptive traffic control strategies indicates that automatic estimation of these proportions from traffic detector data is becoming increasingly important. When it is possible to count the vehicles both entering and exiting at each of an intersection's approaches, methods based on ordinary least squares can produce usable estimates of the turning movement proportions, but when the number and/or placement of the detectors does not support complete counting, these methods fail. This paper has two objectives, the first being to assess the feasibility of estimating turning movement proportions from less than complete sets of traffic counts, and the second being to compare the statistical properties of less than complete count estimates to those estimates generated from complete counts.

Original languageEnglish (US)
Title of host publicationProceedings of the International Conference on Applications of Advanced Technologies in Transportation Engineering
PublisherASCE
Pages628-632
Number of pages5
StatePublished - Jan 1 1996
EventProceedings of the 1995 4th International Conference on Applications of Advanced Technologies in Transportation Engineering - Capri, Italy
Duration: Jun 27 1995Jun 30 1995

Other

OtherProceedings of the 1995 4th International Conference on Applications of Advanced Technologies in Transportation Engineering
CityCapri, Italy
Period6/27/956/30/95

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