||National Research Council, Washington, DC.;Environmental Protection Agency, Washington, DC.;Department of Energy, Washington, DC.;Department of Transporation, Washington, DC.
This final report of the Committee comprehensively discusses the inter-related elements of diesel car use--diesel emissions, health and environmental effects, economic effects, issues, and methodology in regulatory decision making, and analysis of controlling diesel car particulates. The volume examines the scientific, technical and economic factors involved in diesel car use and the implications for regulating such vehicles. Diesel engines emit soot particles and chemicals that are known or suspected carcinogens, toxic substances, and mutagens. The report evaluates the limitations and significance of research to date on health consequences, concluding that while diesel cars and light trucks do not appear to present a threat to health, more additional research and monitoring are required to provide more knowledge. Also discussed are emission control technology; economic impact in terms of capitol investment, consumer prices, maintenance, and road safety; and regulatory approaches available to policymakers. Among the recommendations are: giving consideration to regulation of heavy diesel trucks and buses as a cost-effective strategy; reevaluation of the need for more information; better data gathering to assist in this sequential decision-making approach; and continued research on health and environmental effects of dieselization.