Abstract
The Urban Network Design Problem consists in determining the optimal configuration of an urban transport network, in relation to the link directions, lane allocation for each link and signal setting. In this paper the Multicriteria Urban Network Design is solved through genetic algorithms and a traffic flow model based on hydrodynamic analogy is used for the total travel time and air pollution emission evaluation. The procedure has been applied to a real size network, producing a set of non dominated solutions. Some comparisons between total travel time and emission rates obtained with an aggregate model and the adopted disaggregate model have been made. (A)