20 Works

Economic and Environmental Benefits of a Reduced Roadside Mowing Program for Kentucky Highways

Chris Van Dyke, Candice Wallace & Doug Kreis
A growing number of state departments of transportation (DOTs) are introducing conservation mowing programs that aim to reduce the frequency of roadside mowing while expanding the footprint of pollinator habitat. Wanting to get a better handle on the utility conservation mowing, the Kentucky Transportation Cabinet (KYTC) funded this study to explore the economic and environmental benefits that accrue from mowing less often. This report presents a synthesis of best conservation mowing practices based on a...

Understanding and Efficiently Managing Right-to-Take Challenges in Kentucky

Pam Clay-Young & Steve Waddle
Kentucky constitutional and statutory law requires that a fair process be in place to let a property owner challenge a condemnor’s right to acquire private property, including a right to appeal the initial decision. Property acquired by a condemnor must be for public use, and property owners have the right to an immediate and expedited hearing on right-to-take. Two of these requirements will remain in place regardless of statutory revisions: the requirement that property must...

USGS 104b Grant Program

Emily Koyagi, Steve Evans & Lindell Ormsbee
The Kentucky Water Resources Research Institute (KWRRI) is one of 54 Water Resource Research Institutes or Centers located throughout the United States and its territories. The state water resources research institutes are authorized by the Water Resources Research Act of 1964 (P.L. 88-379 codified at 42 U.S.C. 10301 et seq.) through the Water Resources Research Institutes Program administered by the United States Geological Survey (USGS) and organized as the National Institutes for Water Resources (NIWR)....

Crash Data Analysis Tool 2.0 Research Report and User Guide

Eric Green & Paul Ross
Report Number: KTC-21-21/SPR21-5602-1F

USGS 104(b) Grant Program

Emily Koyagi, Steve Evans & Lindell Ormsbee
The Kentucky Water Resources Research Institute (KWRRI) is one of 54 federally authorized water resource institutes or centers throughout the United States and its territories. It operates under the authority of the Water Resources Research Act of 1964 (P.L. 88-379 codified at 42 U.S.C. 10301 et seq.) through the Water Resources Research Institutes Program administered by the United States Geological Survey (USGS). KWRRI’s annual base grant program under section 104(b) supports the following objectives specified...

Evaluation of the Kentucky Transportation Cabinet’s Maintenance Rating Program

Bryan Gibson, Rachel Catchings, Vinh Dao & Doug Kreis
The Kentucky Transportation Cabinet (KYTC) relies on its Maintenance Rating Program (MRP) to systematically measure conditions on state-owned roads and rights of way. Every year, the Cabinet evaluates 300-400 road segments in each of its highway districts. Segments receive aggregate scores ranging from 0 to 100, with the target score being 80. This report appraises the MRP and discusses potential strategies for its improvement. Compared to asset management programs established at other state transportation agencies,...

Kentucky Traffic Collision Facts 2020

Eric Green, Paul Ross, Christopher Blackden, Michael Fields & Kenneth Agent
KENTUCKY’S TRAFFIC COLLISION FACTS report is based on collision reports submitted to the Kentucky State Police Records Branch. As required by Kentucky Revised Statutes 189.635: “Every law enforcement agency whose officers investigate a vehicle accident of which a report must be made...shall file a report of the accident...within ten days after investigation of the accident upon forms supplied by the bureau.” The stated purpose of this requirement is to utilize data on traffic collisions for...

Longer Service Life Bridge Coatings

Danny Wells, Theodore Hopwood, Bobby Meade & Sudhir Palle
The Kentucky Transportation Cabinet (KYTC) has maintenance oversight responsibilities for approximately 1,100 steel bridges; it also helps local governments and other entities with maintenance painting on other steel bridges. Because maintaining steel bridges is costly, Cabinet officials asked Kentucky Transportation Center (KTC) researchers to identify materials and methods that will prolong their service lives. Steel bridges are uniquely vulnerable to deterioration resulting from exposure to atmospheric conditions (e.g. moisture, ultraviolet rays) and chlorides, the latter...

In-Cab Alert System for Commercial Motor Vehicle Drivers

Brian Howell, Jennifer Walton & Jeeyen Koo
In-cab telematic devices use an increasingly robust data platform and can be used to share safety alerts with other commercial vehicle drivers (CMV) drivers. Real-time alert data can come from state transportation agencies as well as from private companies. To address common quality and coordination issues among differing data sources, the Kentucky Transportation Center (KTC) partnered with the Kentucky Transportation Cabinet (KYTC) and a private vendor, PrePass, to share its App used to send information...

2021 Safety Belt Usage Survey in Kentucky

Erin Lammers, Kenneth Agent & Eric Green
The objective of the survey summarized in this report was to establish a statewide safety belt usage rate in Kentucky for 2021. This rate can be compared to those determined from previous surveys. The 2021 statewide survey documents the continued effect associated with law enforcement, related education, and general public attitude.

Improving Overweight and Over-Dimensional Logistics and Truck Routing

Jerry Kissick, Jerry Pigman & Jennifer Walton
In 2012, the Kentucky Transportation Cabinet’s (KYTC) Division of Motor Carriers (DMC) issued 98,196 overweight or over-dimensional (OW/OD) permits. To determine whether a route can accommodate an OW/OD vehicle, analysts must have current and accurate data on construction schedules, road conditions, and detour routes, among other factors. This study documents processes used by DMC for permitting and routing OW/OD vehicles. It includes detailed flowcharts that capture each aspect analysts follow during the decision-making process. As...

Project Management Research Support

Bryan Gibson, Jeff Jasper, Robin Baskette, Christopher Van Dyke & Doug Kreis
Like many state transportation agencies, the Kentucky Transportation Cabinet (KYTC) faces unprecedented challenges related to project development and management. Staff losses due to attrition and retirements have resulted in the loss of institutional knowledge. Early- to mid-career project managers (PMs) shoulder more responsibilities than ever while being expected to deliver over 600 successful projects each year. To improve the efficiency of project management, PMs must be able to access effective project management concepts, tools, and...

Access Management Best Practices

Adam Kirk & Chris Van Dyke
Research has persistently demonstrated that adopting a systematic access management framework improves highway operations and bolsters safety. Many state transportation agencies have adopted formal access management programs to systematize the application of access management techniques, however, the Kentucky Transportation Cabinet (KYTC) been unable to institute such a program due to institutional, regulatory, and political constraints. Recognizing the benefits of judicious access management, the Cabinet asked researchers at the Kentucky Transportation Center (KTC) to identify access...

Initial Project Estimates for Design, Right of Way, Utilities, and Construction

Christopher Van Dyke, Bryan Gibson, Jeff Jasper, Bob Lewis & Doug Kreis
Estimating the cost of highway construction projects is among the more challenging tasks state transportation agencies routinely deal with. Developing accurate estimates is a particularly fraught exercise during the planning and scoping phases, when projects have not been thoroughly defined and information on specifics is in short supply. While the Kentucky Transportation Cabinet (KYTC) has used several methodologies to generate initial cost estimates for design, right of way, utilities, and construction (DRUC), approaches vary between...

Analysis of Traffic Crash Data in Kentucky 2016-2020

Eric Green, Paul Ross, Christopher Blackden, Michael Fields & William Staats
This report documents analysis of traffic crash data in Kentucky. A primary objective of this study was to determine average crash statistics for Kentucky highways. Where used, rates were calculated for various highway types and for counties and cities. Difference criteria were used for exposure. Average and critical numbers, SPFs, and crash rates were calculated for various highway types in rural and urban areas. These metrics rely on crashes identified on highways where Annual Average...

A Review of Kentucky’s Extended-Weight Hauling Programs

P. Gayle Marks, Jon Wilcoxson, Bryan Gibson, Chris Van Dyke, Andrew Martin, Jennifer Walton & Doug Kreis
Kentucky established its Extended Weight Coal or Coal By-products Haul Road System (EWCHRS) to increase the state’s competitiveness within the coal industry and reduce financial burdens on coal haulers. A new extended-weight haul system for unrefined petroleum products will come online in 2022. To facilitate enforcement of weight limits throughout Kentucky, this report surveys literature on how overweight vehicles affect roads and bridges, describes statutes and regulations governing weight limits in the state, discusses policies...

Investigation of Workflow Processes and Best Practices in Kentucky’s CDL Program

Valerie Keathley-Helil, Andrew Martin, Brian Howell & Jennifer Walton
Kentucky’s Division of Driver Licensing maintains the driver history records for all licensed drivers in Kentucky. It serves as the state driver licensing agency and is the locus for meeting the federal CDL requirements under 49 CFR 384. Kentucky relies on FMCSA’s Commercial Driver’s License Program Implementation (CDLPI) grant funding to subsidize salaries for Federally Funded Temporary Labor (FFTL). FFTLs verify and process documents as well as field phone calls from customers. DDL administrators say...

Evaluation of Liquid Deicing Materials for Winter Maintenance Applications

Erin Lammers
Winter weather can often pose difficulties for transportation agencies as they work to clear roads of snow and ice quickly so that motorists can travel safely and efficiently. Kentucky has made efforts to maximize efficiency within its winter maintenance program by focusing on optimized equipment usage and personnel time management. In this study, KYTC evaluated anti-icers and how their performance compared to the current performance of brine and calcium chloride mixture. New brine additives claim...

Analysis of Truck Weight Limit Regulations

P. Gayle Marks, Jon Wilcoxson, Bryan Gibson, Chris Van Dyke, Jennifer Walton & Doug Kreis
In the United States vehicle weight limits are set by laws and regulations enacted at the state and federal levels. On interstates the maximum allowable gross vehicle weight is 80,000 lbs. States use different rules for permitting overdimensional and overweight (OD/OW) vehicles, and most have carve outs that exempt specific commodities from standard weight limits. This results in a complex legal and regulatory landscape that enforcement personnel can find difficult to negotiate. This report discusses...

Evaluating the Safety Cultures of Kentucky Transportation Cabinet Maintenance Crews

Ashtarout Ammar, Zamaan Al-Shabbani, Hala Nassereddine, Chris Van Dyke & Gabriel B. Dadi
Highway work zones can be dangerous and unpredictable. Between 2003 and 2017, over 1,800 workers died on road construction sites. Eliminating injuries and deaths requires state transportation agencies to adopt robust safety cultures as there is a clear relationship between these cultures and worker behaviors. The Kentucky Transportation Cabinet (KYTC) is committed to improving safety performance by nurturing a positive safety climate among highway maintenance crews. To understand the safety cultures of KYTC maintenance crews,...

Registration Year

  • 2021
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Resource Types

  • Report
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Affiliations

  • University of Kentucky
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