A MULTIMODAL TRAFFIC NETWORK EQUILIBRIUM-MODEL WITH EMISSION POLLUTION PERMITS - COMPLIANCE VS NONCOMPLIANCE

In this paper, we develop a multimodal traffic network equilibrium mod el with vehicular emission pollution permits using the theory of varia tional inequalities. We consider both the case of compliance in which travelers emit pollutants no more than that mandated by their license holdings and that of noncompliance. In the former case, we prove that environmental standards imposed by the authorities are met provided th at the initial license allocation meets the environmental target. For the latter model, we establish a penalty scheme that guarantees that t here will be no nonconcompliant behavior. Qualitative analysis of the model is conducted and existence and uniqueness results of the solutio n obtained. An algorithm is proposed, with convergence results, to com pute the multimodal equilibrium link load, travel demand, marginal cos t of emission abatement, emission underflow, overflow, license, and li cense price pattern. The algorithm is then applied to several numerica l examples. (C) 1998 Elsevier Science Ltd. All rights reserved.