Study Details

Study Title: Safety Effects of Wet-Weather Pavement Markings

Authors: Park et al.

Publication Date:JAN, 2019

Abstract: While there has been increasing interest in wet-weather pavement markings due to their improved visibility and potential for enhancing road safety in wet-night conditions, there is a lack of research evaluating their safety effectiveness based on actual wet-night crash data. This paper presents the safety assessment of wet-weather pavement markings in the Atlanta District of the Texas Department of Transportation, conducted by two different evaluation approaches that are known to be rigorous and statistically defensible: Empirical-Bayes before-after analysis and full Bayes before-after analysis with comparison groups. The results from both approaches suggest that there are positive safety effects of wet-weather pavement markings for relevant crashes, providing evidence-based support for safety benefits of wet-weather markings.

Study Citation: Park, E. S., P. J. Carlson, and A. Pike. "Safety Effects of Wet-Weather Pavement Markings". Accident Analysis and Prevention, Vol. 133, (2019).

Related Citations: Park, E. S., P. J. Carlson, and A. Pike. "Safety Effects of Wet-Weather Pavement Markings". Presented at the 98th Annual Meeting of the Transportation Research Board, Paper No. 19-04199, Extended abstract only, Washington, D.C., (2019).

CMFs Associated With This Study

Category: Delineation

Countermeasure: Upgrade existing markings to wet-reflective pavement markings

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.72284 StarsWet roadAllNot specifiedNot specified
0.9267.44 StarsDry weatherAllNot specifiedNot specified
0.46653.44 StarsWet roadK,A,B,CNot specifiedNot specified
0.83616.44 StarsDry weatherK,A,B,CNot specifiedNot specified
0.74625.44 StarsRun off road,Wet roadAllNot specifiedNot specified
0.88124 StarsDry weather,Run off roadAllNot specifiedNot specified