In an effort to obtain a realistic mixture which could be used in EMVSS'S as a test condition to qualify headlamp and windshield washers and wipers, a mixture (dirt film) based on a formulation provided in "Composition and Removal of Automobile Windshield Films", published by the Virginia Highway Research Council (VHRC) in June 1970, was used for experimentation. A complete windshield cowl section was utilized as a test block employing both dark and light backgrounds to provide good contrast for the subjective criticisms and comments on the dirt film. The test dirt film was applied to both windshield and headlamp and checked for effective wipe patterns. Approximate cost of the test dirt film used was 81c for a one-ounce dry mix. Results indicated that a dirt film similar to the VHRC film analysis can be readily produced and is a reasonable facsimile of actual dirt films.

  • Corporate Authors:

    Tracor Jitco, Incorported

    1300 East Gude Drive
    Rockville, MD  United States  20851
  • Publication Date: 1973-3

Media Info

  • Features: Photos; Tables;
  • Pagination: 60 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00263435
  • Record Type: Publication
  • Source Agency: Highway Safety Research Institute
  • Report/Paper Numbers: DOT-HS-801 138 Final Rpt.
  • Contract Numbers: DOT-HS-256-3-542
  • Files: TRIS
  • Created Date: Dec 13 1974 12:00AM