Traffic signals and overhead flashers at rural intersections: their effectiveness in reducing accidents. Paper presented at the 49th Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1970.

In this study were two specific types of operational improvements-overhead flashers and traffic signals installed at low volume, high speed rural intersections. Accident exposure during the two periods was compared on the basis of exposure rates severity indices and equivalent property damage only accidents and rates.