DEVELOPMENT OF A HEAVY DUTY TRUCK MODEL FOR SOUTHERN CALIFORNIA

This paper describes the results of a project that developed a travel demand model to forecast the movement of heavy duty trucks through the five-county Southern California Association of Governments (SCAG) modeling region. This model is fully integrated with SCAG's existing five-county travel demand forecasting model and will be used to evaluate the impacts of trucks on traffic flow and air quality, as well as to test potential capital improvements such as truck-only lanes. The model generates truck trips from socioeconomic data traditionally forecast by SCAG and includes an update of commodity flow forecasts, detailed surveys of shippers, and truck counts throughout the region. It also includes focused efforts to quantify truck trips generated by special generators such as airports, seaports, intermodal terminals, and major industrial employers. The study collected empirical data regarding the passenger car equivalents (PCE) of trucks in southern California and developed a dynamic traffic assignment procedure for trucks, simultaneous with automobiles, which accounts for the effects of heavy-duty trucks through the use of truck PCE factors.

Language

  • English

Media Info

  • Pagination: 14p

Subject/Index Terms

Filing Info

  • Accession Number: 00770209
  • Record Type: Publication
  • Report/Paper Numbers: Publication No. CD-006
  • Files: TRIS
  • Created Date: Oct 15 1999 12:00AM