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.


  • English

Media Info

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

Subject/Index Terms

Filing Info

  • Accession Number: 01051955
  • Record Type: Publication
  • Report/Paper Numbers: Report No. 5-4713-01-P3
  • Contract Numbers: Project 5-4713-01
  • Created Date: Jun 25 2007 8:29AM