• Location: Trimble and Warren Counties, Kentucy

Through SAFE KY: Kentucky's 2020-2024 Strategic Highway Safety Plan (SHSP), the Kentucky Transportation Cabinet (KYTC) has adopted the mission to enhance the lives of those who use Kentucky's transportation system by preventing crashes that result in fatalities and serious injuries. The goal is to reduce the annual number of fatalities below 500 by the year 2024. KYTC is implementing various safety countermeasures through construction projects on Kentucky highways to realize a reduction in fatalities and serious injuries. 

As part of this on-call contract, B&N has been assigned to review two corridors with a high frequency of roadway departure crashes: US 42 in Trimble County and KY 185 in Warren County. As part of these tasks, B&N analyzed historical crash trends and collected field data using a 360-degree, GPS-enabled camera. KYTC provided LiDAR information that was also combined with data with roadway features from the Highway Information System (HIS). 

After compiling this information, the B&N team identified potential countermeasures to mitigate roadway departure crashes. Potential improvements include minor pavement widening, upgrades to existing curve signing, implementing rumble strips, and superelevation modifications. Cost estimates and benefit-to-cost ratios were developed for each of the potential improvement options. The preferred countermeasures, as selected by district staff, will be advanced to construction documents as part of another task.