OVERVIEW OF SMOOTH- AND TREADED- TYRE FRICTION TESTING BY ILLINOIS DEPARTMENT OF TRANSPORTATION

Author(s)
HALL, JP ILLINOIS DEPT OF TRANSP, USA BERNARDIN, DB ILLINOIS DEPT OF TRANSP, USA GEHLER, JG ILLINOIS DEPT OF TRANSP, USA
Year
Abstract

The Illinois Department of Transportation (IDOT) has been involved in pavement friction testing with locked-wheel equipment since 1968. In 1980 IDOT started testing with a smooth (blank) tire in addition to the treaded (ribbed) tire. Since 1985 IDOT has routinely tested with both smooth and treaded tires and has accumulated a multitude of test data. In 1987, IDOT developed tentative guidelines for evaluating both smooth- and treaded-tire data in analyzing high wet accident sites. The history of friction testing equipment development in Illinois and the upgrading process used for constructing IDOT's current friction testers are described. A summary of various distributions of smooth- and treaded-tire friction test data collected since 1985 on IDOT's highway network is presented

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Publication

Library number
I 858487 IRRD 9307
Source

TRANSPORTATION RESEARCH RECORD WASHINGTON DC USA 0361-1981 REPORT 1992 1348 PAG: 43-8 T2

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.