Acquisition of information on exposure and on non-fatal crashes. Volume V: Executive summary.

Summaries of each of the three phases of the study are presented. In Phase I, dealing with exposure survey considerations, analyses were performed on classifications of exposure data and procedures for exposure surveys. In Phase II, dealing with accident data inacurracies, data from a survey of drivers was compared with driver's official records to determine under-reporting bias. In Phase III, detailed procedures were determined to implement a national exposure survey in 1972.