Barrier-curb redirection effectiveness. Paper presented at the 52nd Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1973.

A method to define and determine the re-directive effectiveness of barrier curbs of limited height (12 in. or less) is developed. Barrier-curb redirection performance can be described in terms of a limiting characteristic velocity, that is the component of vehicle velocity normal to the curb face. This boundary and representative on-site distributions of vehicle speed and run off-the-road angle can be used to compute a measure of curb redirection effectiveness.