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Title: DISTANCE-BASED MODEL FOR ESTIMATING A BUS ROUTE ORIGIN-DESTINATION MATRIX
Accession Number: 00667615
Record Type: Component
Availability: Find a library where document is available Abstract: An origin-destination (O-D) matrix is a valuable tool for bus service planning. Unfortunately this trip table is not commonly available to the planner because of survey costs. However, stop-level on-off totals are often available. Past research has concentrated on using these totals along with a small O-D survey as a "seed matrix" to generate the full O-D matrix. Such a seed is subject to bias and sampling error and also incurs the survey cost. A method is described in which the seed matrix is generated using a propensity function that models the propensity of travel as a function of travel distance. The proposed function is a product of a power term and an exponential term, equivalent to a gamma distribution. When applied to one-directional travel, the gamma seed is shown to be reduced to a power function. The power function exponent is estimated by maximum likelihood for data from bus routes in Boston and Miami and is consistently found to be near 1.0. The gamma seed combined with the biproportional method to match origin and destination totals is shown to be effective in generating O-D matrixes for Boston and Miami routes. In a practical design application, design measures were found to be relatively insensitive to changes in the function parameter.
Supplemental Notes: This paper appears in Transportation Research Record No. 1433, Public Transportation: Bus, Rail, Ridesharing, Paratransit Services, and Transit Security. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Public transportation: bus, rail, ridesharing, paratransit services, and transit security Monograph Accession #: 01401241
Language: English
Authors: Navick, David SFurth, Peter GPagination: p. 16-23
Publication Date: 1994
Serial: ISBN: 0309055105
Features: Figures
(2)
; References
(20)
; Tables
(3)
TRT Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Highways; Planning and Forecasting; Public Transportation
Files: TRIS, TRB
Created Date: Oct 7 1994 12:00AM
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