ROADS Air Modeling Software  

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BREEZE ROADS

Air Modeling Suite for Roadways and Intersections

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.

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 contains the following technical and productivity-enhancing features:

Productivity Features

• Built in text editor
• Windows Explorer-type interface
• Customizable display and toolbars
• Context sensitive help
• 2-D, top down and 3D view
• Backup files for automatic save during power failure
• Network capable
• Unlimited undo option
• Shift object tools
• Rotate object tools
• Latitude/Longitude conversion tool
• Search capabilities

Technical Features

• Met Viewer for meteorological data viewing
• O3 Method
• Unlimited receptor grids - Cartesian or polar
• Unlimited sources and source groupings
• Multiple pollutant data repository
• Options for culpability analyses
• Integrated Error trapping
• BREEZEx File Compression Technology
• Integrated contouring
• Integrated unit conversion
• Onsite receptor removal option
• Simplified building generation mode

View Tech Sheet
 

Purchasing
Breeze ROADS Software, Service, and Support