Testing a Friction Measurement System in Polk CountyStatus: CompleteReport Date: 10/31/2013 Summary: A friction measurement system tested on two snowplows in Polk County found that the county's current winter maintenance practices are adequate to keep roads in passable condition during snowstorms. Both the original system and a reinforced version, however, failed after only a few days of use. Final Deliverables: Report #2013-26 Research Summary Related Materials: Related Research: