Samenvatting
This article is an adapted version of the 1973 U.S. National roadside breath testing survey, Procedures and results. (See B 5068). It describes the sampling and operational procedures used in the survey and analyzes the BAC results in relation to a number of geographic and driver characteristics. It concludes that such a survey is a valuable means of providing useful evaluative data at a reasonable cost, and it suggests ten operational improvements for such a future survey.