Record Display for the EPA National Library Catalog
RECORD NUMBER: 426 OF 444
|OLS Field Name||OLS Field Data|
|Main Title||User's Guide to CAL3QHC Version 2.0: A Modeling Methodology for Predicting Pollutant Concentrations Near Roadway Intersections (Revised).|
|Author||Eckhoff, P. ;|
|CORP Author||Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.|
|Additional Subjects||Vehicle air pollution ; Intersections ; Air pollution dispersion ; Carbon monoxide ; Motor vehicles ; Exhaust emissions ; Exhaust gas dispersion ; Idling ; Traffic signal timing ; Traffic volume ; Traffic lanes ; Roads ; Air pollution monitoring ; Computerized simulation ; User guides ; CAL3QHC computer model|
CAL3QHC is a microcomputer based model to predict carbon monoxide (CO) or other pollutant concentrations from motor vehicles at roadway intersections. The model includes the CALINE3 dispersion model along with traffic algorithm to estimate vehicular queue lengths at signalized intersections. CAL3QHC estimates total air pollutant concentrations from both moving and idling vehicles. This document provides a technical description of the model, user instructions, and example applications.