AUTOMATION OF THE SCHONFELD METHOD OF HIGHWAY SURFACE TEXTURE CODE ASSIGNMENT. VOLUME I. THREE DIMENSIONAL CLASSIFICATION TECHNIQUE INTRODUCTION AND SUMMARY

The research involved development of a system for measurement and automatic classification of pavement surface texture properties in accordance with the Schonfeld method. Electronic stereophotogrammetric techniques were adapted to obtain digital data defining the surface from stereophotographs. Algorithms were then developed to process this data on a computer and classify the surface texture automatically. Preliminary designs of camera systems, which could be mounted on a highway vehicle and collect the required data, were developed and shown to be feasible. The automated procedure allows a much more comprehensive and detailed investigation of surface texture to be carried out than the previously available manual method. Comprehensive information about pavement texture can provide valuable data for studying skid resistance characteristics and monitoring wear and polishing of pavements.

• Supplemental Notes:
  • See also PB-254 828. Sponsored in part by Maryland State Highway Administration, Brooklandville. Bureau of Research.
• Corporate Authors:

  ENSCO, Incorporated

  Transportation and Instrumentation Sciences
  Alexandria, VA  United States  22303

  Federal Highway Administration

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

  Maryland Department of Transportation

  2323 West Joppa Road
  Brooklandville, MD  United States  21022
• Authors:
  • Howerter, E
  • Rudd, J
• Publication Date: 1975-8

Media Info

• Pagination: 51 p.

Subject/Index Terms

• TRT Terms: Data collection; Durability; Electronic equipment; Highway planning; Information processing; Measurement; Pavement surface course; Pavements; Photogrammetry; Polished aggregates; Roads; Roughness; Skid resistance; Stereographic projection; Texture
• Old TRIS Terms: Electronic devices
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00137342
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA/MD/R-76/8A Final Rpt.
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 16 1977 12:00AM