An intergenerationalcomparison of carbon dioxide emission by travel behavior

Abstract

When the carbon dioxide emission from transport part rapidly has been increasing. it is important to realize sustainable transport in order to support sustainable society. Sustainable transport is evaluated from three dimensions, that is society, environment and economy and we focused on an evaluation from an environmental side. The purpose of this study is to evaluate a fuel tax from the viewpoint of an intergenerational equityof the carbon dioxide emission. We simulated carbon dioxide volume emitted from vehicles and railways in Osaka prefecture. Using Keihanshin person trip survey data at 1970, 1980 and 1990, a traffic demand forecasting model was constructed by each age class. Scenarios from 1970 to 2020 were made from population, improvement of fuel consumption and alternatives of a fuel tax. The carbon dioxide emission for 50 years was estimated applyingthis model. In this study an intergenerational equity is defined as a gap between the emission of generation in which there are most reduction from the present state transition pattern and that of the least generation. It wasfound that an intergenerational equity was kept in case of practicing a fuel tax early.