The Effect on Speed and Accidents of Improved Delineation at Three Hazardous Locations : Technical Paper

This study was the first of several which are planned by the Joint Highway Research Project at Purdue University to investigate the relationship between visibility and speed at roadway friction points. This initial study was concerned with the effect of delineation on speed patterns and accidents at three hazardous or potentially hazardous rural locations: a narrow bridge, a hazardous intersection, and an adequate intersection. Illumination is eventually planned for these locations and it was foreseen that a comprehensive study in the area of speed and visibility could be developed for the period prior to and subsequent to the date of illumination.