Estimate of emissions on road networks via Generic Second Order Models

In this paper we provide emission estimates due to vehicular traffic via Generic Second OrderModels. We generalize them to model road networks with merge and diverge junctions. Theprocedure consists on solving the Riemann Problem at junction assuming the maximization ofthe flow and a priority rule for the incoming roads. We provide some numerical results for asingle-lane roundabout and we propose an application of the given procedure to estimate theproduction of nitrogen oxides (NOx) emission rates. In particular, we show that the presence ofa traffic lights produces a 28% increase in the NOx emissions with respect to the roundabout.