Author(s)

A. Agostini, M. Lelli, E. Negrenti & A. Parenti

Abstract

The new version of the ENEA-TEE model (TEE2003) has been developed with many features allowing the user to better analyse transport related impacts, taking into account: vehicle kinematics, cold emission distribution, the parking process, emissions of new categories of pollutants, noise emissions and accident occurrence. As regards the kinematics, TEE code can calculate link emissions starting from standard correlations based on average speed or from instantaneous emissions data. This flexibility satisfies two requirements: the possibility of the detailed emission calculations, and the flexibility of the input data available from measurements or from traffic models. As it concerns cold start emission spatial and temporal distributions, TEE offers alternative solutions for the user, according to the more or less disaggregated information, allowing one in any case to distinguish different situations (e.g. morning traffic in residential areas where cold vehicles represent a majority, and city centres where cold vehicles are more frequent during evening peaks). The parking process submodel provides a meaningful treatment of traffic flows from and to parking areas and so allows the locating of cold vehicles’ emissions in space and time and a greater accuracy in the estimation of the evaporative emissions distribution. The new pollutants added in the TEE2003 version are N2O, Benzene, PM10, Aromatics, Benzo-(A)-pyrene, PAH, Dioxins and Furans. In TEE2003 two new models have been inserted: the noise emission model, and the accident occurrence model. The former is sensible to vehicle speed and heavy-duty vehicle presence. The accident model calculates the total number of accidents involving only vehicles or vehicles and pedestrians.

Keywords