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The new version of TEE model (Transport Energy Environment) has been developed in the frame of the FP5 ISHTAR and HEARTS Projects with several features for better analysing transport related direct impacts, taking into account vehicles kinematics, cold start emissions distribution, parking processes, noise emissions and accident occurrence. Specific efforts were dedicated to the modelling of the effects of vehicles kinematics on hot emissions, where the software calculates link emissions by adopting average speed based functions, instantaneous emissions, or the innovative 'kinematics correction functions' model, and the modelling of parking processes which are relevant for cold start and evaporative emissions. In the frame of the testing and the application of the software version developed in the HEARTS Project, the tool was applied for the analysis of the effects of various transport measures in the city of Florence. The assessment of TEE software was performed in conjunction with a well-known dispersion model (OSPM) and the collection of air pollution measured data. The results obtained have shown the greater accuracy and sensitivities that can be achieved through the detailed modelling of key processes affecting vehicles emissions. Details of these results will be presented in the conference.