Abstract
The report presents the executive summary on the assesses changes in levels of helmet use, state-wide accident experience, and incidence of cyclist injury between a pre-repeal period and two post-repeal years. Results of three state-wide surveys, each of which included observations of over 12,000 cyclists, showed helmet use to decline from nearly 100% in the pre-repeal period to 57% in 1977 and 48% in 1978. Data from 1,515 motorcycle accidents occurring between July 1976 and June 1979 were examined to assess the influence of helmet law repeal on incidence and severity of victim injuries. Helmet use was clearly related to the severity of victims' injuries and to the incidence of head trauma.