Division of Engineering Research on Call: Task #3 - Investigation on Pavement Friction Demand Categories and Highway Condition-Based Friction Demand SN Threshold

Though faced with continuously increasing maintenance due to aging infrastructure and limited funding, Ohio Department of Transportation is striving to maintain and improve the efficiency and safety of the state highway system. One of the major tasks is reducing highway crashes. Skid resistance is currently the road surface characteristic that has the best-established relationship with crash risk. ODOT's Highway Safety Section monitors wet/dry pavement crash rates to identify areas of concern and the pavement friction testing are performed and the skid data is collected. It is known that pavement sections have varying friction demand based on the speed, type of facility, geometrics, ingress/egress, and a host of other factors. Unfortunately, there is no straightforward methodology that we are aware of to determine friction demand in terms of friction skid numbers (SN) for different roadway conditions in the current pavement friction management (PFM) system. In order to address this problem, in this project, a comprehensive review of the current practice of managing skid resistance to address safety concerns was carried out. Then a comprehensive database was constructed from four ODOT-maintained databases. Next, a preliminary friction demand site categories were proposed and discussed with ODOT Subject Matter Experts based on literature and existing pavement management practices. Some criteria in the definition of site categories have been further adapted by analyzing Ohio crash data. Then, based on the proposed friction demand site categories, two strategies have been employed to determine the friction demand for each site category, namely 1) AASHTO method III and 2) clustering analysis. Based on the clustering analysis results, investigatory levels of SN40S and SN40R for each friction demand site category were recommended.

• Record URL:
  https://ohiomemory.org/digital/collection/p267401ccp2/id/18391/rec/1
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/59102
• Corporate Authors:

  Ohio Department of Transportation

  Office of Statewide Planning and Research
  1980 West Broad Street
  Columbus, OH  United States  43223

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Wang, Hui
  • Liang, Robert
• Publication Date: 2019-11

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; References;
• Pagination: 63p

Subject/Index Terms

• TRT Terms: Friction course; Pavement maintenance; Pavement performance; Roughness; Skid resistance
• Geographic Terms: Ohio
• Subject Areas: Highways; Maintenance and Preservation; Pavements; Safety and Human Factors;

Filing Info

• Accession Number: 01729202
• Record Type: Publication
• Contract Numbers: State Job Number 135785
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jan 29 2020 9:32AM