Abstract
The association between urban population density and transport energy consumption is a well-discussed topic in the metropolitan level. However it is less studied in the regional scale. This paper demonstrates the results of an observation about transport energy use in 174 regions of Iran. Logarithmic regression analysis shows very weak associations between urban population density and transport fuel use in the regional level. However statistical analysis of population size and the area of the regions by means of Kruskal-Wallis test indicates that regions with medium populations of between 100000 and 500000 inhabitants and areas of between 2000 and 5000 square kilometers enjoy more energy-efficient consumption than regions with more than 500000 people and 15000 square kilometers area and small regions of less than 100000 residents and 2000 square kilometers. This observation raises the question about higher energy efficiency of mid-sized cities and regions. Also more specialized studies about urban sprawl and its impacts on transport energy consumption in small towns and rural places seem desirable.
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