Integrated macroscopic traffic flow and emission model based on METANET and VT-micro ∗

We present a framework to integrate macroscopic traffic flow models with micros copic emission and fuel consumption models. Since macroscopic traffic flow models d o not provide the acceleration as an output, while microscopic emission and fuel consu mption models require both the instantaneous speeds and accelerations as input, we des cribe how to generate these variables. In particular, we consider the macroscopic traffic flo w model METANET and the microscopic emission and fuel consumption model VT-micro. In order to integrate these models, we propose a method to generate from the METANET model the s patial and temporal speed-accelerations pairs and the number of vehicles subject to them, which are required as input by VT-micro. The integration of the models results in a new ma croscopic emission and fuel consumption model called the VT-macro model.