The software was designed to assist local authorities in their statutory duties to Review and Assess air quality under the Environment Act 1995. These programs calculate the air pollutant concentration in a street canyon, given the street geometry, wind speed, traffic flow and emission factor.
Results are output only on the screen.
It uses emission factors for the years 1996 to 2005 that are built into the program and the user cannot alter them. The option to copy the model results into a file. If a file is not chosen, results go only to the screen. The option to replace the built in emission factors q with input of new emission factors chosen by the user. The storing of results in a file is also a useful feature.