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Mathematical Problems in Engineering
Volume 2014, Article ID 539596, 12 pages
Research Article

Energy and Environmental Efficiency of China’s Transportation Sector: A Multidirectional Analysis Approach

School of Management, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui 230026, China

Received 19 March 2014; Accepted 14 April 2014; Published 12 May 2014

Academic Editor: X. Zhang

Copyright © 2014 Gongbing Bi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


With the rapid economic development, the transportation sector becomes one of the high-energy-consumption and high-CO2-emissions sectors in China. In order to ensure efficient use of energy and to reduce CO2 pollution, it is important to gain the best performance standards in China’s transportation sector. Data envelopment analysis (DEA) has been accepted as a popular tool of efficiency measurement. However, previous studies based on DEA are mainly restricted to the radial expansions of outputs or radial contractions of inputs. In this paper, we present a nonradial DEA model with multidirectional efficiency analysis (MEA) involving undesirable outputs for the measurement of regional energy and environmental efficiency of China’s transportation sector during the period 2006–2010. We not only evaluate the energy and environmental efficiency level and trend of China’s transportation sector but also investigate the efficiency patterns of 30 regions and three major areas of China. Additionally, we identify the energy saving potential and CO2 emissions reduction potential for each province and area in China in this study.