Manual for the Computation of the Disaggregate County-Level Truck Flows and Explanation of Model Calibration

Truck data are critical to transportation planning in any region. Intercity and interstate truck flows have an important impact on traffic volumes, the mix of traffic, and experienced level of congestion on the state-maintained infrastructure. In Technical Report 0-4713-R1 entitled “Development of Sources and Methods for Securing Truck Travel Data in Texas”, a multinomial logit approach was proposed to estimate county level truck travel data from the publicly available 1997 Commodity Flow Survey (CFS) and IMPLAN data over the short term. Although not a required research product, the modeling approach was considered very useful to the Texas Department of Transportation. The objective of this manual is to explain how to use the calibrated multinomial logit (MNL) models to generate disaggregate county-level truck flows for Texas and to present a detailed explanation of the required steps to calibrate the MNL models in the future.

• Record URL:
  http://www.utexas.edu/research/ctr/pdf_reports/5_4713_01_P3.pdf
• 
• Corporate Authors:

  University of Texas, Austin

  Center for Transportation Research, 3208 Red River Street
  Austin, TX  United States  78705

  Texas Department of Transportation

  Research and Technology Implementation Office, P.O. Box 5080
  Austin, TX  United States  78763-5080

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Hodges, Mark
  • Prozzi, Jolanda P
  • Perez-Ordonez, Alejandro
• Publication Date: 2006-8

Language

• English

Media Info

• Media Type: Web
• Features: Tables;
• Pagination: 89p

Subject/Index Terms

• TRT Terms: Calibration; Disaggregate analysis; Manuals; Mathematical models; Multinomial logits; Traffic flow; Truck traffic
• Identifier Terms: 1997 Commodity Flow Survey
• Geographic Terms: Texas
• Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 01051955
• Record Type: Publication
• Report/Paper Numbers: Report No. 5-4713-01-P3
• Contract Numbers: Project 5-4713-01
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jun 26 2007 2:32PM