Research Article
Aug 1976
Sensitivity of Trip Distribution to Subarea Focusing
Authors: Nancy L. Nihan and Jacques LassabliereAuthor Affiliations
Publication: Transportation Engineering Journal of ASCE
Volume 102, Issue 3
Abstract
The expected accuracy of a proposed method for reducing computational costs of urban and regional travel demand forecasting is explored. The technique investigated is a data aggregation approach called subarea focusing. In subarea focusing a subarea of interest in a study region is isolated for analysis. An imaginary boundary (called the window) is drawn around the subarea. Areal data within the window are maintained at a fine (zonal) level of detail while data outside the window are aggregated into districts. Network data are not simplified. The effects of subarea focusing on trip distribution outputs were investigated. Three subareas (Seattle CBD, Tacoma CBD, and the suburban city of Bellevue) and three levels of aggregation were investigated. Both regional and centroid-to-centroid errors were calculated. The error analyses indicate that subarea focusing is a sufficiently accurate technique for conventional demand forecasting.
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Transportation Engineering Journal of ASCE
Volume 102 • Issue 3 • August 1976
Pages: 555 - 569
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Aug 1976
Published online: Feb 5, 2021
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Authors
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Nancy L. Nihan
Assoc. Prof. of Civ. Engrg., Univ. of Washington, Seattle, Wash.
Jacques Lassabliere
Grad. Student, Univ. of Washington, Seattle, Wash.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.