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ROADS - CALINE Family of Models
BREEZE ROADS is an air dispersion modeling suite that predicts 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.

ROADS can be used in conjunction with the MOBILE5 or EMFAC emission models or other emission data to demonstrate compliance with National Ambient Air Quality Standards (NAAQS), Federal Conformity Rules, the UK's National Air Quality Strategy, and modeling for highway site and design selection.

ROADS - CAL3QHC, CALINE4, CAL3QHCR

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Data
Meteorological
Download BREEZE Trial CAL3QHCr / ISC

BREEZE Special (for a limited time)

BREEZE ROADS GIS US$1,295

  • BREEZE ROADS GIS Pro (CALINE4, CAL3QHC, CAL3QHCR)
  • One (1) year of expert
    technical support and software upgrades
In partnership with the A&WMA, BREEZE is offering this special offer for a limited time.  For multiple licenses, please call a BREEZE sales representative.
      

Overview Productivity Technical CALINE4 CAL3QHC CAL3QHCR FAQ
The ROADS product contains several well-accepted dispersion models that vary in their applicability.

CAL3QHC - a roadway model that predicts 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 the Discrete Parcel Method.

In addition to the mobile source dispersion models (CAL3QHC, CAL3QHCR, and CALINE4), ROADS also includes a fully integrated GIS and can display DXF files, aerial photos, or other basemaps (.BMP files).

Due to the flexibility of BREEZE ROADS, users can enter model input data manually, by import, by pasting in table view, model object drag-n-drop, or point-n-click.

 

BREEZE ROADS is ideal for modeling roadway intersections.