Περίληψη:
The aim of the paper is to investigate the economic and environmental effects of the economic incentives that promote the exchange or replacement of old passenger cars for newer, less-polluting models which would ultimately add to the alleviation of air pollution problems in the greater Athens area. The incidence of the scrappage/replacement policy is examined employing a model of optimal car replacement. Then, by analyzing the data during the period of policy application some quantitative indicators are derived. The results support the idea that the scrappage/replacement policy applied in Greece between 1 January 1991 and 31 March 1993 can be analyzed in terms of an optimal replacement model where subsidies on the purchase price of the clean car are introduced as a measure of environmental policy. The actual incidence of the policy, reduction in the age of the car fleet and reduction on the emissions, are in agreement with the results of the theoretical model.