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Rapidly industrializing developing countries are now starting to note similar air pollution problems to those of the industrialized world. This paper surveys the adverse environmental impacts resulting from motor vehicles, reviews technologies developed to address these problems, and summarizes the current status of pollution controls around the world. Special focus is on the design of strategies to address the emerging problems of developing countries.

This paper examines one aspect of the in-use compliance program - recall. It reviews the existing program and its evolution, evaluates a variety of the modifications which have been suggested and proposes some specific changes which would retain the overall goals while resulting in some increased flexibility and therefore some potential cost savings compared to the existing program.

This study applies the methodology developed for two earlier evaluations of diesel particulate controls to urban buses. Since these vehicles are used almost exclusively in urban areas where population is most dense, the analysis indicates the net benefits of control are very high.

The purpose of this paper is to survey the adverse environmental impacts resulting from motor vehicles, to review technologies developed to address these problems, and to summarize the current status of pollution control programs around the world.

This study builds upon an earlier diesel particulate cost-benefit analysis and updates it where appropriate based on new soiling and odor information. It does not generate new information but merely reviews and analyzes existing data. In addition, a new section dealing with heavy duty trucks and buses is added.

This study builds upon the National Academy of Sciences study in the rapidly changing area of diesel particulate cost-benefit analysis and updates it where appropriate based on new data or analysis. It does not generate new information but merely reviews and analyzes existing data. The body of the paper a) explains the basis for estimating the various costs, b) describes a computer model to relate the costs to the benefits, and c) presents the results of the analysis.

High mileage vehicles (in excess of 50,000 miles) contribute more than half of all vehicular emissions. With the new catalytic converter equipped cars, the proportional contribution of these vehicles may be even higher than for pre-catalyst vehicles. Thus a substantial portion of motor vehicle related air pollution may be caused by vehicles not subject to the manufacturer directed provisions of the Clean Air Act. This paper presents a modeling effort based on hypotheses and some preliminary data, and suggests some alternatives to combat this potential problem.