Traffic congestion and emissions are two main types of travel disutilities. Counterintuitively, the two objectives, alleviating congestion and reducing emissions, cannot always be achieved at the same time, namely, sometimes conflict with each other. Such inconsistency naturally leads to a bi-criteria or bi-objective optimization problem. In this thesis, we introduce two approaches for simultaneous control and management of vehicular congestion and emissions on road networks: toll scheme and tradable credit scheme. We study the problem in three types of networks in terms of user heterogeneities: homogeneous users, multi-class users with different values of time and multiple vehicle types. In each situation, we examine the existence of nonnegative toll scheme and tradable credit...[ Read more ]

Traffic congestion and emissions are two main types of travel disutilities. Counterintuitively, the two objectives, alleviating congestion and reducing emissions, cannot always be achieved at the same time, namely, sometimes conflict with each other. Such inconsistency naturally leads to a bi-criteria or bi-objective optimization problem. In this thesis, we introduce two approaches for simultaneous control and management of vehicular congestion and emissions on road networks: toll scheme and tradable credit scheme. We study the problem in three types of networks in terms of user heterogeneities: homogeneous users, multi-class users with different values of time and multiple vehicle types. In each situation, we examine the existence of nonnegative toll scheme and tradable credit scheme to decentralize any Pareto-efficient link flow pattern as user equilibrium. Finally, we investigate the possibility of introducing revenue-neutral toll and subsidy schemes to obtain the target link flows.