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(%) Quality Crash Type Crash Severity Roadway Type Area Type
0.72 28 4 Stars Wet road All Not specified Not specified
0.926 7.4 4 Stars Dry weather All Not specified Not specified
0.466 53.4 4 Stars Wet road K,A,B,C Not specified Not specified
0.836 16.4 4 Stars Dry weather K,A,B,C Not specified Not specified
0.746 25.4 4 Stars Run off road,Wet road All Not specified Not specified
0.88 12 4 Stars Dry weather,Run off road All Not specified Not specified