COMPREHENSIVE EVALUATION OF TRANSPORTATION INFRASTRUCTURE SYSTEMS EFFICIENCY USING DATA ENVELOPMENT ANALYSIS

概要

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DEA is adopted for evaluating the efficiency of transportation infrastructure systems of nineteen cities and towns in Japan. The cities can be divided into two groups, which are big cities from the whole Japan and small cities and towns in Hokkaido. The decision-making unit here is not a single infrastructure unit, but the whole transportation infrastructure systems in the city which include the road networks and the railway systems. Transportation modes, which serve people mobility, consist of road-using modes (cars and buses) and rail-using modes (JR, private trains, streetcars, subways, monorails, etc.). For comparison purpose, evaluations using various input-output combinations were performed. Furthermore, to achieve robust evaluation, different DEA concepts, including CCR, Inverse DEA, and BCC models, were performed. This study provides a benchmark for cities to improve their infrastructure system management by identifying weak points of each city and suggesting the way to improve efficiency.