APPLICATION OF AN ALGORITHM FOR ESTIMATING FREEWAY TRIP TABLES
The application of an existing computer program that uses only the marginal totals of a freeway trip table to estimate ramp-to-ramp traffic flows is described. The flows estimated by the program (synthetic origin destination matrices (SYNODM) were compared with origin-destination data obtained from a postcard survey and the distribution and magnitude of the estimation errors across the trip table were documented. A modified version of the basic SYNODM algorithm that incorporates limited origin-destination data into the estimation method is also discussed. Relative to the postcard data, the estimates of trip interchanges obtained from the modified version of SYNODM exhibited a substantially smaller average trip error than those obtained from the basic SYNODM program. However, given the limited scope of the study, no generalizations regarding the adequacy of the basic SYNODM program could be made.
- Record URL:
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309037581
-
Supplemental Notes:
- Publication of this paper sponsored by Committee on Passenger Travel Demand Forecasting. 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
-
Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Stokes, Robert W
- Morris, Daniel E
- Publication Date: 1984
Media Info
- Media Type: Print
- Features: Figures; Maps; References; Tables;
- Pagination: pp 21-25
- Monograph Title: TRAVEL MODEL DEVELOPMENT AND OPERATIONS RESEARCH METHODS
-
Serial:
- Transportation Research Record
- Issue Number: 976
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Computer programs; Data collection; Freeways; Origin and destination; Ramps; Surveys; Traffic flow; Trip distribution
- Subject Areas: Highways; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 00395398
- Record Type: Publication
- ISBN: 0309037581
- Files: TRIS, TRB
- Created Date: May 31 1985 12:00AM