Comprehensive Truck Size and Weight Limits Study - Modal Shift Comparative Analysis Technical Report

The purpose of this Volume II: Modal Shift Comparative Analysis is to present the analysis of six truck size and weight policy options (scenarios) and to describe in detail the approach, data, models, limitations, and assumptions underlying estimates of potential modal shifts associated with the six scenarios analyzed in the U.S. Department of Transportation (USDOT) Comprehensive Truck Size and Weight Limits Study (2014 CTSW Study). For this study, the term modal shift includes both shifts between truck and rail modes and shifts between vehicles and operating weights within the truck mode. This Volume II: Modal Shift Comparative Analysis provides the foundation for assessing the full range of potential impacts associated with the truck size and weight scenarios analyzed in the 2014 CTSW Study. Changes in allowable vehicle weights and dimensions will influence the payloads that can be carried on different truck configurations, which in turn will affect: The total number of trips and miles of travel required to haul a given quantity of freight; The transportation mode chosen to haul different types of freight between different origins and destinations; The truck configurations and weights used to haul different types of commodities; The axle loadings to which pavements and bridges are subjected; Potential highway safety risks; The costs of enforcing Federal truck size and weight limits; Energy requirements to haul the Nation’s freight; Emissions harmful to the environment and to public health; Traffic operations on different parts of the highway system; Total transportation and logistics costs to move freight by surface transportation modes; The productivity of different industries; and The competitiveness of different segments of the surface transportation industry. Impacts are quantified to the greatest extent possible, but where data are unavailable to reliably quantify potential nationwide impacts, qualitative assessments of the impacts of changes in truck size and weight limits are discussed.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Technical Report
  • Features: Appendices; Figures; Maps; Tables;
  • Pagination: 267p

Subject/Index Terms

Filing Info

  • Accession Number: 01637930
  • Record Type: Publication
  • Files: TRIS, ATRI, USDOT
  • Created Date: Jun 13 2017 6:06PM