HIGHWAY FRICTION MEASUREMENTS WITH MU-METER AND LOCKED WHEEL TRAILER

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

• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Texas State Department of Highways & Public Transp

  11th and Brazos Streets
  Austin, TX  United States  78701
• Authors:
  • Galloway, B M
  • Rose, J G
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Drainage; Friction; Friction tests; Mineralogy; Pavements; Roughness; Surface course (Pavements); Texture; Tire treads; Tires
• Subject Areas: Highways; Hydraulics and Hydrology; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00206463
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: 138-3
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jan 24 1972 12:00AM