Abstract
We propose in this work a road traffic emission source inventory model and its application to the Paris region. The originality of this model is its capacity for dealing with on-road scale measurements together with more global information on transportation fluxes which are usually extracted from statistical population data representative of larger areas. In this approach, emission factors have to be carefully chosen. The model uses specific exhaust emission factors based on real driving modes and on a representative vehicle fleet. This task generally requires a great deal of traffic density and speed data for accurate emission calculations. Extrapolations over time and space are used to approximate missing parameters. Such a model offers a refined description of emission fluxes and can be applied to perform sensitivity tests and vehicle evolution impact studies.
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