Before-and-After Analysis of Safety Improvements on I 75 in Northern Kentucky

Jerry G. Pigman & Don L. Cornette
In an attempt to evaluate the effectiveness of various safety improvements on approximately five miles of I 75 in northern Kentucky, a before-and-after analysis of accidents was conducted. Safety improvements were: 1) a variable message signing system in the northbound direction; 2) a New Jersey-type median barrier wall; and 3) general improvements such as guardrail end treatments, break-away sign installations, contour grading, etc. Results indicate the safety improvements were effective in reducing the overall accident...
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