Traffic simulator NETSTREAM for evaluation of CO2 emissions

This paper describes a new approaching to modeling traffic flow model of traffic simulators for evaluating CO₂ emissions. So far, we have developed the traffic simulator NETSTREAM (NETwork Simulator for TRafflc Efficiency And Mobility). It has been able to reproduce traffic congestions in large-scale networks because of its unique traffic flow model. This paper proposes an enhancement of the traffic flow model to add acceleration as a condition, which has a great effect on the calculation of CO₂ emissions. The proposed model is then verified and validated. The results indicate that it can reproduce the acceleration which agrees closely with the actual data, while maintaining the Q-K and K-V relationships. Finally, this paper shows an example of evaluating an acceleration-control system. We confirm that the enhanced version of NETSTREAM is able to evaluate environmental improvements in large-scale networks.