Remembering Calvin Grayson

Former KTC Director Calvin Grayson, a legend in Kentucky transportation, passed away on July 4, 2020, at the age of 95. Even late into life, his passion for leadership endured as did his commitment to improving transportation throughout Kentucky. Although Mr. Grayson’s contributions to transportation were many, he will also be remembered as a veteran, a man of faith, a father, a husband of 61 years, an ally, and a friend. His friends, family, and colleagues will dearly miss his advice and humorous quips.

Mr. Grayson’s influence will continue to be felt throughout Kentucky’s transportation community as his friends and colleagues alike will rely on the guidance and leadership that he provided well into the future.


SPF-R is a safety performance function (SPF) development tool created by the Traffic & Safety team in the Kentucky Transportation Center at the University of Kentucky.

SPF-R is built on free open source software utilizing R and R-Studio with the RTools package. Here are the links to get R, R-Studio, RTools and SPF-R:

Safety Circuit Rider

The Safety Circuit Rider for the Technology Transfer Program uses crash data to locate high incident sites along roadways and assist communities in finding low cost roadway safety improvements. The Safety Circuit Rider works with local governments to remove fixed objects such as trees, brush, stumps, etc. and to install signage per MUTCD guidelines. This FREE technical advice is helping communities across the state of Kentucky save lives every day.

The Safety Circuit Rider program is made possible through funding from the Federal Highway Administration – Kentucky (FHWA-KY) in coordination with the Kentucky Transportation Cabinet (KYTC).


CatStrong carbon fiber products were developed to strengthen, upgrade, and retrofit concrete structural members such as beams, columns, pier caps, and walls. The advantage of CatStrong is ease of application, requiring only a single worker without the need of heavy construction equipment or tools.

Although high performance materials are higher in cost, compared to other retrofit measures, CatStrong products reduce overall structure repair costs. In some cases, applying the materials does not impact traffic.