This Circular presents ideas from the Transportation Research Board Committee on Alcohol, Other Drugs, and Transportation on the research needed to continue to reduce impaired driving. It has been 7 years since this Committee undertook such a review and discussion. The research needs ideas in this Circular are organized into five areas: the general population, youth, repeat offenders, special populations, and drugs other than alcohol. The Circular contains summaries of the five working groups that were organized around these five areas, including their ranking of the research needs identified. This is followed by a combined ranking of all the research needs identified in order to show overall research priorities. Also included in the Circular are the 10 background papers prepared for the workshop. (Author/publisher)
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