This report presents the results of a program to develop procedures to predict motor vehicle air quality concentrations in the vicinity of highways as a function of highway design configuration, traffic characteristics and meteorological conditions. The study consisted of several phases involving: (1) the development of both a numerical simulation, conservation of mass dispersion model for the study of vertical cross-sections of concentrations very near the roadways, and a Gaussian plume diffusion model for plan view, corridor and regional-scaled analyses; (2) field measurement program for model evaluation purposes at six different roadway sites in Washington, D.C. including the measurement of carbon monoxide on both sides of the road, measurements of traffic volumes, speed distributions and vehicle mix and continuous meteorological measurements of wind speed and direction; (3) a detailed validation of the models and the calculation of statistical factors quantifying model accuracy; and (4) implementation of the modeling capabilities and graphical display programs on DCDHT computer facilities, including the preparation of a User's Manual, training staff in model usage and a case study demonstrating model applications. The models developed are shown to predict air pollution potential very well over a wide range of imput quantities. /FHWA/

  • Corporate Authors:

    Environmental Research & Technology, Incorporated

    429 Marrett Road
    Lexington, MA  United States  02173
  • Authors:
    • Egan, B A
    • Epstein, A
    • Keefe, M
    • Lague, J
    • Lavery, T
    • Reifenstein, E
    • WILLIS, B
  • Publication Date: 1973-5

Subject/Index Terms

Filing Info

  • Accession Number: 00260076
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Final Rpt.
  • Contract Numbers: H&T 7202
  • Files: TRIS, USDOT
  • Created Date: Oct 5 1974 12:00AM