Abstract
In this paper a real-time macroscopic modeling framework of road traffic emissions is suggested based on an average-speed emission model. A model function is created to describe the spatiotemporal distribution of motorway traffic emissions using loop detector data only which is suitable for emission dispersion and immission modeling. The proposed model is built using macroscopic traffic variables, and derivation is shown both on microscopic and macroscopic levels, in the latter case showing relationship with traffic performance functions as well. The suggested model function is validated in a VISSIM/MatLab simulation environment, applying COPERT IV average speed model in the proposed framework, compared to a microscopic emission model (Versit+Micro is used via the VISSIM add-on called EnViVer). Based on the suggested model, control objectives are stated for a multi-criteria model-based control. During the cost function analysis, pollutants are distinguished in terms of the areal extension of their effects and a diverse modeling approach is carried out for pollutants causing global and local effects. The cost function is analyzed for steady-state flow conditions.
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