MULTICRITERIA EVALUATION FOR STRATEGIES OF IMPROVING AND CONTROLLING AIR-QUALITY IN THE SUPER CITY - A CASE-STUDY OF TAIPEI CITY

Abstract

The deterioration of air quality in big cities is closely related to transportation. Thus, the application of transportation means to improving and controlling the air quality of metropolitan areas is a correct and functioning method. Among several feasible improvement policies, transportation system management (TSM) is a kind of low-cost method which can be expected to show effects in a short-term period. It would necessitate a great deal of manpower, effort and time if each one of these methods were to be measured precisely and objectively. As a result, the utilization of an expert evaluation model to extract professional knowledge from various fields so as to locate views of consensus would result in a successful decision-making method under circumstances where information is incomplete. This paper puts forward three phases of a multicriteria evaluation model which will, at the onset, perform consensus elimination under key criteria so as to find out non-dominated strategies; next, every expert uses the ELECTRE III model to rank non-dominated strategies under multiple criteria; the consensus ranking method proposed by Cook and Seiford (1978) is then employed for uncovering the ranking of minimal recognition differences from all experts. This paper takes Taipei city as an illustration to elaborate the intended method.