CALRoads View™

Traffic Air Dispersion Model

CALRoads View Overview

Software Category: Air Dispersion Modeling

Version 6.5: Release Notes

CALRoads View
CALRoads View
is an air dispersion modeling package for predicting air quality impacts of pollutants near roadways.  CALRoads View combines the following mobile source air dispersion models into one seamless integrated graphical interface: CALINE4, CAL3QHC, and CAL3QHCR.

These US EPA models are used for predicting air pollution concentrations of carbon monoxide (CO), nitrogen dioxide (NO2), particulate matter (PM), and other inert gases from idle or moving motor vehicles.

3 Models in 1 Integrated Interface!




The CALINE 4 model predicts air concentrations of carbon monoxide (CO), nitrogen dioxide (NO2), and suspended particles near roadways. Options are available for modeling near intersections, parking lots, elevated or depressed freeways, and canyons.





The CAL3QHC model estimates total air pollutant concentrations (CO or PM) near highways from both moving and idling vehicles. This model also estimates the length of queues formed by idling vehicles at signalized intersections.





The CAL3QHCR model is an enhanced version of CAL3QHC, that can process up to a year of hourly meteorological data.  Vehicular emissions, traffic volume, and signalization (ETS) data can be specified for each hour of a week.