The objective of this study was to evaluate the effectiveness and durability of snowplowable raised pavement markers (RPM) installed on the RPM system in Kentucky. The durability evaluation dealt with the marker housing.

The data show that continued use of the currently approved snowplowable RPM can be justified if the castings are properly installed on new pavements with a commitment that the pavement will be maintained. An evaluation of centerline rumble strips installations showed that they should be considered on rural, two-lane roads with 12-foot lane widths (having new pavements) and paved shoulders.

Report Date


Report Number


Digital Object Identifier



The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, the Kentucky Transportation Cabinet. This report does not constitute a standard, specification, or regulation. The inclusion of manufacturer names or trade names is for identification purposes only and is not to be considered an endorsement.