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Title:Evaluating All-Weather Pavement Markings in Illinois: Volume 2
Author(s):Hawkins, Neal R.; Smadi, Omar; Knickerbocker, Skylar
Subject(s):all-weather pavement-marking tape
wet retroflectivity
field evaluation
continuous wetted
pavement marking
pavement-marking performance
Abstract:The project evaluated two pre-manufactured pavement marking tapes (380AW and XRP-R) over three winter seasons at two different Illinois DOT locations (central and southern Illinois). The two products were installed on I-80 within a recessed groove in contrast to IL-3 where they were rolled in with the last pass of the asphalt finishing machine. Retroreflectivity was measured under three standard conditions including dry, wet-recovery, and continuously wetted. The 380AW tape measured 148 mcd under continuously wetted conditions after 3 winters on I-80 and overall measured significantly higher than the XRP-R tape under the two wet conditions (recovery and continuously wetted). The XRP-R tape performed well under dry conditions; however, wet-recovery retroreflectivity was below 100 mcd (after initial conditions) and continuously wetted retroreflectivity did not exceed 100 mcd. Short of a minimum retroreflectivity threshold for wet conditions, these findings will support IDOT decision making in terms of product selection where trying to enhance safety through providing higher levels of wet night visibility. The findings also highlig
Issue Date:2019-06
Publisher:Illinois Center for Transportation/Illinois Department of Transportation
Citation Info:Hawkins, Neal R., Omar Smadi, and Skylar Knickerbocker. 2019. Evaluating All-Weather Pavement Markings in Illinois: Volume 2. A report of the findings of ICT-R27-120. Illinois Center for Transportation Series No. 19-008. Research Report No. FHWA-ICT-19-007. Illinois Center for Transportation, Rantoul, IL.
Genre:Technical Report
Rights Information:No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.
Date Available in IDEALS:2019-07-05

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