Analysis of the energy and environmental efficiency of the transportation sector under the constraints of energy consumption and environmental pollutions in Iran

Economic growth has caused some environmental problems such as energy shortage and environmental pollution. In this regard, in the present study, the analysis of a fixed-sum energy and environmental efficiency to achieve sustainable efficiency in the transport sector of Iran under the limitation of energy consumption and environmental pollution using the Common equilibrium efficient frontier data envelopment analysis (CEEFDEA) is carried out. For this purpose, first, a certain value of energy consumption and carbon dioxide emission was considered. Then, based on these values and considering the minimum-maximum of their fixed sum, the general equilibrium efficiency boundary was built. The obtained results show that all provinces have the same satisfaction level of 0.979. Based on the results of the equilibrium efficiency boundary through the degree of satisfaction, all provinces should adjust energy consumption and carbon dioxide emissions. Also, the sustainable efficiency value of most provinces in the transportation sector was less than one. According to the results, the transportation sector is inefficient in terms of eco-efficiency score. Therefore, it is necessary to provide the basis for sustainable development by adopting and implementing rational policies compatible with the role of energy and environment in this sector.