Elements of median design in relation to accident occurrence. Paper prepared for the 52nd Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1973.

The purpose of this study was to compare accident histories of different median types and to prove verification of generally recommended median widths and slopes. The analyses reported provided evidence from accident histories to support the general requirement that wider medians are safer, and twelve-foot shoulders should be provided where guardrail is to be used. It was indicated that medians should be a minimum of 30-40 feet wide for high speed facilities.