抄録
We develop a car type preference model based on a detailed database on sales and characteristics of cars in 1990's. The model enables us to analyze the CO2 reduction effects of green taxation of car possession. Green taxation can be the effective method with a small tax burden and a revenue-neutral taxation. Comparing the several taxation methods, the most effective way is to add (reduce) a proportional figure to the fuel consumption per distance to (from) the present possession tax. The CO2 reduction is approximately six percent per year in the flow base, while it decreases to five percent per year considering into account the feedback on the increase of running distance. The less effective but more practical method is to classify cars according to the size and apply the green taxes for each class of size. In this case, the classification by the displacement is more effective than by car weight. And CO2 reduction in the city area is larger than the rural area since the green taxation increases the running distance of the small size car, the ratio of which is lower in the city area.
