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Title: Distributed Approach for Estimation of Dynamic Origin–Destination Demand
Accession Number: 01129774
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: The problem of dynamic origin–destination (O-D) demand estimation aims at estimating the unknown demand values for all O-D pairs and departure times with the use of available time-varying link flow observations. This paper presents a distributed algorithm for estimating the dynamic O-D tables for urban transportation networks. The new algorithm supports the deployment of systems for real-time traffic network management that adopt dynamic traffic assignment methodology for network state estimation and prediction. It encapsulates available link information and reduces the data size required by conventional algorithms for O-D demand estimation. The algorithm adopts a two-stage approach. In the first stage, the study area under consideration is divided into a number of subareas, and an O-D demand table is estimated independently for each subarea. These local O-D tables are then integrated to construct an O-D table for the entire study area. An application of the new algorithm for a typical freeway network is presented as an example.
Monograph Accession #: 01141653
Report/Paper Numbers: 09-2167
Language: English
Authors: Etemadnia, HamidehAbdelghany, KhaledPagination: pp 127-134
Publication Date: 2009
ISBN: 9780309126205
Media Type: Print
Features: Figures
(5)
; References
(20)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Subject Areas: Data and Information Technology; Highways; Planning and Forecasting; I72: Traffic and Transport Planning
Files: TRIS, TRB
Created Date: Jan 30 2009 6:31PM
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