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Last Updated:
09/08/2009



Report Number                           Title
UCB-ITS-PWP-2000-12                           New Aggregation Strategies to Improve Velocity Estimation From Single Loop Detectors


Author(s)   Benjamin Coifman, Zu-HSu Lee

Date of Final Publication   2000-08-01

Number of Pages   17                  MOU#   3000

Abstract
This paper focuses on using loop detector data for estimating velocity of freeway traffic. In the paper, the authors present a new approach, using aggregation methodology, to estimate velocity and reduce the impact of long vehicles in the original traffic measurements. The authors first present a review of the state of the practice and the related shortcomings of parameter estimation from single loop detectors. This is followed by a description of the proposed alternative method for estimating velocity. The report concludes by contrasting the new approach with conventional estimates.

Keywords
vehicle speed // loop detectors