Investigating Ecological Impacts on selected Traffic Management Methods

Kurzfassung

Within the iTETRIS project, the used SUMO traffic simulation was extended by models for computing the emissions of pollutants CO, CO2, HC, PMx, and NOx, as well as for computing the fuel consumption on a microscopic, per-vehicle, base. The emission model was based on the HBEFA (“Handbuch der Emissionsfaktoren”) database which covers a large variety of vehicle types, considering differences between passenger and heavy duty vehicles, the engine displacement, the fuel type, and the EURO emission norm of the vehicles. This database was reformulated into a microscopic model which uses the vehicle class, the vehicle‟s speed and the vehicle‟s acceleration for computing the amount of a certain pollutant‟s emission within one discrete time step. The kind of this model‟s embedding within SUMO allows to collect and to evaluate the ecological impacts of traffic management strategies on per-vehicle, per-lane, and per-road base. Using this information, two sub-topics of traffic management were addressed: ecological routing and the ecological impacts of traffic lights.