The first step in the highway safety improvement process involves reporting and summarizing accidents by location. Once the high-accident locations are identified, field investigations and analysis follow. Locations are ranked on the basis of potential for accident reduction. Safety improvements are then scheduled and implemented. Finally, improvements are evaluated in terms of accident reduction.

This report compiles, in detail, the process involved in arriving at safety improvements in the high-accident spot-improvement program. References are made to information and methodologies developed in earlier reports by the Division of Research of the Kentucky Department of Transportation. Most of the background information and analysis techniques used to develop the methodologies are not included here. The methods, instead, are cited as they fit together in the total process. The procedures are shown as they fit into the total safety improvement process developed and implemented by the Division of Traffic of the Kentucky Department of Transportation.

Report Date


Report Number


Digital Object Identifier



The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not reflect the official views or policies of the University of Kentucky nor of the Kentucky Department of Transportation. This report does not constitute a standard, specification, or regulation.