Record Display for the EPA National Library Catalog


Main Title User's guide for HIWAY, a highway air pollution model /
Author Zimmerman, John R.
Other Authors
Author Title of a Work
Thompson, Roger S.
Publisher National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1975
Report Number EPA-650/4-74-008
Stock Number PB-239 944
OCLC Number 01472123
Subjects Air--Pollution--Computer programs ; Air--Pollution--Mathematical models ; Dispersion--Computer programs ; Automobiles--Motors--Exhaust gas
Additional Subjects Highway transportation ; Air pollution ; Atmospheric motion ; Highways ; Mathematical models ; Computerized simulation ; Wind(Meteorology) ; Turbulent diffusion ; Computer programs ; FORTRAN ; HIWAY Computer program
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 650-4-74-008 Headquarters Library/Washington,DC 03/12/2012
EJBD  EPA 650-4-74-008 c.1 Headquarters Library/Washington,DC 05/07/2013
EKBD  EPA-650/4-74-008 Research Triangle Park Library/RTP, NC 02/16/2007
ELBD  EPA 650-4-74-008 AWBERC Library/Cincinnati,OH 09/22/2006
NTIS  PB-239 944 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 59 p. : ill. ; 27 cm.
A computer model, called HIWAY, that can be used for estimating the concentrations of nonreactive pollutants from highway traffic is described. This steady-state Gaussian model can be applied to determine air pollution concentrations at receptor locations downwind of at-grade and cut-section highways located in relatively uncomplicated terrain. The air pollution concentration representative of hourly averaging times at a downwind receptor location is found by a numerical integration along the length of each lane and a summing of the contributions from each lane. With the exception of receptors directly on the highway or within the cut, the model is applicable for any wind direction, highway orientation, and receptor location. The model was developed for situations in which horizontal wind flow occurs. The model cannot consider complex terrain or large obstructions to the flow such as buildings or large trees. An interactive version of the computer model is available on Environmental Protection Agency's Users' Network for Applied Modeling of Air Pollution (UNAMAP).