WET NIGHT VISIBILITY STUDY

Apparatus and methods developed for characterization of roadway delineation systems are described, and laboratory and field tests are reported for a selection of eleven retroreflective systems. Hot sprayed and hot extruded thermoplastic striping applied in the standard marking pattern and in other patterns, asphalt bonded granite aggregate overcoated with white beaded paint, asphalt bonded Sinopal aggregate, button reflectors, and GDOT's standard white beaded traffic paint were included in a full factorial field study covering about 15 miles on Interstate 85 northeast of Atlanta. Both visual effectiveness and maintenance studies were performed, and the effects of snow-plow damage were assesed on a section of U.S. 129 at Neel's Gap in North Georgia. Independent photometric methods yielded good correlation in the laboratory and field, wet and dry, and the results were in agreement with visual evaluation.

  • Supplemental Notes:
    • Sponsored by Georgia Dept. of Transportation, Atlanta. See also PB-231 020.
  • Corporate Authors:

    University of Georgia, Experiment

    Georgia Experiment Station
    Experiment, GA  USA 

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    Georgia Department of Transportation

    One Georgia Center
    600 West Peachtree Street, NW
    Atlanta, GA  USA  30308
  • Authors:
    • Tooke Jr, W R
    • Hurst, D R
  • Publication Date: 1975-7

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 238 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00093623
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Final Rpt.
  • Contract Numbers: 6701
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: Feb 4 1976 12:00AM