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home / products / APT models / ROADS GIS ProROADS GIS ProBREEZE ROADS GIS Pro - Complete with the expert technical support you expect and need by those who have been developing models for 20 years. Overview:BREEZE ROADS GIS Pro, an air dispersion modeling package designed to predict air quality impacts of Carbon Monoxide (CO), Nitrogen Dioxide (NO2), Particulate Matter (PM), and other inert pollutant concentrations from moving and idling motor vehicles at or alongside roadways and roadway intersections. BREEZE ROADS can be used in conjunction with MOBILE5 or EMFAC emission models or other emission data to demonstrate compliance with National Ambient Air Quality Standards (NAAQS), Federal Conformity Rules, U.K.'s National Air Quality Strategy, as well as general modeling for highway site and design selection. BREEZE ROADS features the popular mobile source dispersion models, CAL3QHC, CAL3QHCR, and CALINE4. CAL3QHC... is a roadway model designed to predict air pollutant concentrations near highways and arterial streets due to emissions from motor vehicles operating under free-flow conditions and idling vehicles. In addition, CAL3QHC incorporates methods for estimating traffic queue lengths at roadway intersections. CAL3QHCR... an enhanced version of CAL3QHC, this version can process up to a year of hourly meteorological, vehicular emissions, and traffic volume and signalization data in one model run. In addition, 1-hour and running 8-hour averages of CO or 24-hour and annual block averages of PM can be calculated. CALINE4... includes similar model theory as is in CAL3QHC, but has an advanced method for calculating NO2 concentrations using a scheme called Discrete Parcel Method. Included in this package:
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