High Friction Surface Treatment
Pilot Safety Project
location 4 - North St. SE
Crashes on the nation’s roadways continue to
be one of the leading causes of fatalities and major injuries in the
United States, particularly in rural areas. Roughly half of all fatal
crashes occur at intersections or on horizontal curves.1,2 In horizontal curve crashes, it is often the
case that the vehicle speed and curve geometry create a “friction
demand” higher than what can be achieved with standard pavement
surfaces. Intersection crashes often occur when driver error creates an
unexpected need for increased friction demand to serve as a “speed
countermeasure.” One low cost approach that has been shown to be
effective in addressing high “friction demand” locations is the
installation of a High Friction Surface Treatment (HFST).
High Friction Surface Treatments are pavement surface treatments that
are composed of extremely hard, polish-and abrasion-resistant aggregates
bonded to the pavement surface that greatly enhance the skid resistance
and frictional characteristics of a road surface.
Excerpt from “Safety Opportunities in High
Friction Surfacing” brochure, February, 2013. American Traffic Safety
Services Association (ATTSA).
1 Milstead, R.X. Qin, B. Katz, J. Bonneson, M. Pratt, J. Miles, and P.
Carlson. Procedures for Setting Advisory Speeds on Curves.
FHWA-SA-11-22, Federal Highway Administration, Washington, D.C., June
2 Federal Highway Administration. “Intersection Safety.” U.S. Department
of Transportation, Washington, D.C. 2009, Available at:
HFST Fact Sheet
Friction Surface Treatment (HFST) consist of a thin layer of specially
engineered, durable, high friction aggregate (calcined bauxite) as a
topping on a thermosetting polymer resin binder. The treatments have
long lasting skid resistance and are resistant to wear and polishing. In
sharp curve sections of roadway where excessive braking may occur, a
conventional road surface may become prematurely polished. HFST can
restore the pavement friction characteristics and provide pavement
friction to vehicles in critical breaking and cornering maneuvers.
Installations of HFST at a wide variety of sites around the country have
resulted in significant reductions in crashes. There are no negative
safety effects for motorcycles and bicycles.
Pilot Safety Project in Kitsap County
Summer 2015, Kitsap County Public Works will install High Friction
Surface Treatment (HFST) at seven curve locations throughout the county.
The locations were identified based on their collision history.
1 - Hood Canal Drive NE in hairpin curve north of NE
Bridge View Place
2 - NE Barbers Cut Off Road
3 - Baby Doll Road NE at E Collins Road
5 - Hood Canal Drive NE at NE Cliffside Road
6 - NE Riddell Road at Perry Ave. NE
7 - Central Valley Road NW
Project update, October 2015: The
application of the HFST at Locations 2- Barber Cut-off
Rd., 3- Baby Doll Rd. NE at E. Collins Rd., and
7- Central Valley Rd. NW is complete. However, due to inclement
weather and low temperatures the project is suspend for the season. We
anticipate resuming the pilot at the remaining locations in the Spring
Christine DeGeus, Traffic Operations
Kitsap County Public Works
December 21, 2016