Approach And Driving Data For AssessingThe Pollutant Emissions At A Street Level

Abstract

In the frame of the ARTEMIS and COST346 European research projects, an approach has been designed for estimating the pollutant emissions from the road transport at a street level. This requires defining the traffic situations encountered in the European context considering the actual practices and the road network hierarchical organisation. The approach requires appropriated emissions factors and driving related data. For the passenger cars, reference emissions are derived from a typology of the numerous European driving cycles in 15 tests patterns. This cartography is used to compute linearly the emissions of a given traffic situation. For the heavy-duty vehicles, an instantaneous emission model is used to derive the emission for each vehicle category and traffic situation. In both cases, driving data (i.e. speed curves) are needed to represent each traffic situation. A large collection of the existing European data recorded on-board vehicles was managed with that aim. Although this is a high quantity of data, the identification of specific and representative speed curves remained difficult. The broad lines of this approach are recapitulated in this paper.