Macrotexture and Microtexture Influence Pavement Safety

Pavement Preservation Journal, Winter 2013, Vol. 6, No. 4
Yetkin Yildirim, P.E.

The Texas Pavement Preservation Center would like to thank the late Mr. Gary Billiard for his years of service to the industry, and hopes to honor his memory in endorsement of his presentation on friction and texture enhancement which is available for viewing online at the TPPC website (see News Briefs, Fall 2013, p 29).

The Pavement Preservation Strategies: Friction Restoration Conference was held at the Center for Transportation Research in Austin. The workshop, which was jointly sponsored by Skidabrader and TPPC, can be accessed on the TPPC webpage under “conferences” (

These proceedings included presentations from the TPPC’s director Dr. Yetkin Yildirim, Thomas Yager from NASA Langley Research Center, and Mr. Billiard, former president of Skidabrader.

Surface texture and friction are the main factors affecting the safety of pavements. The friction force that develops between the tire and pavement surface is an essential part of the vehicle-pavement interaction; it gives the vehicle the ability to stop safely. The greater the frictional resistance, the quicker the vehicle can be slowed or stopped. Skid resistance is the friction force which develops at the tire-pavement contact area.

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