Skid Resistance Measurement Tests of New FHWA Reference Systems at the Eastern Field Test Center.

摘要

The Federal Highway Administration (FHWA) is developing a program to improve the method of measuring wet weather pavement skid resistance (SN) and to reduce the variation in results. At the national level,an interim reference system (IRS) is maintained and operated by the National Bureau of Standards. At the regional level,an area reference system (ARS) is maintained and operated at each FHWA Field Test Center. Intercomparisons between these reference systems and the highway measuring systems at the state level provide measurement assurance. In this report,the first correlations between three identical,newly manufactured systems (ARS 1, 2, 3) and the IRS are given. Computed standard deviations of mid-range predicted SN values are typically less than 0.1SN. SN is given as a function of test speed for each system,on two test surfaces. Speed gradients of SN are found to be characteristic of the surface.