Statewide average and critical rates of accidents were determined from 1970-1972 Kentucky accident records for each type of rural highway. Four-lane undivided highways had the highest average accident rate; parkways (toll roads) had the lowest rate. The severity of accidents was related to types of accidents, highways, and traffic control and to safety belt usage. Accidents involving pedestrians were the most severe types; single-vehicle accidents ranked next highest in severity. Excluding accidents at railroad crossings, accidents which occurred on curves had the highest severity index. The use of safety belts was associated with reduced severity.

Report Date


Report Number

No. 387

Digital Object Identifier



The contents of this report reflect the views of the author who Is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Bureau of Highways. This report does not constitute a standard, specification, or regulation.