TMfS provides the capability to model traffic emissions through its purpose-built environmental appraisal module (ENEVAL). ENEVAL provides emissions analysis for both main pollutants and Greenhouse gases.
Emissions are calculated for the whole study area, but can be disaggregated by link, zone, or by a user-defined area.
The speeds used in the emissions calculations incorporate both link-based and junction-based delays. It is also possible to treat queuing at junctions separately within the greenhouse gas emissions calculation.
ENEVAL's GIS mapping capabilities provide a simple but effective way to present information on emissions to policymakers or other interested parties.