Abstract
Under the recent progressive trend toward decentralization, the role of local governments related to city planning is becoming more important. Realizing a low-carbon society necessitates the advocacy of an appropriate policy for the municipal master plan considering how much automobile CO2 emissions each local government can allow. In this study, we examine the policy in the future using the following analysis: 1) calculating automobile CO2 emissions in 38 cities based on the latest data; 2) clarifying the factors of automobile CO2 emissions by the regression model, to which time-series analysis can be applied; and 3) confirming correspondence of the factor of policy in municipal master plan from the regression model. Results show that automobile CO2 emissions switched to a decreasing trend from 2005 in some cities. Furthermore, results revealed that not only density and urban layout, but also the private car ownership rate influences automobile CO2 emissions.
