HIGHWAY SMOKE STUDIES

THE SUBJECT MAY BE DIVIDED INTO THREE PHASES: (1) ESTABLISHING EVALUATION CRITERIA, (2) DEVISING INSTRUMENTATION, AND (3) FORMULATING MEASUREMENT TECHNIQUES AND STANDARDS. THE POSSIBLE EVALUATION CRITERIA HAVE BEEN REVIEWED AND THE SMOKE CRITERION SELECTED WAS THE REDUCTION IN VISIBILITY RATHER THAN THE ANNOYANCE, DISCOMFORT, OR NUISANCE ASPECTS. VISIBILITY IS SHOWN TO BE RELATED TO BRIGHTNESS RATIOS AND CONTRASTS. AN INSTRUMENT FOR MEASURING BRIGHTNESS RATIOS AND CONTRASTS HAS BEEN DESIGNED AND A WORKING MODEL HAS BEEN CONSTRUCTED AND CALIBRATED. PRELIMINARY FIELD DATA ARE SHOWN FOR SEVERAL SETS OF SMOKE CONDITIONS. THE PLAN FOR A COMPLETE STUDY IS OUTLINED TOGETHER WITH SUGGESTIONS FOR TECHNIQUES FOR FIELD MEASUREMENTS AND STANDARD DEFINITIONS. /AUTHOR/

  • Supplemental Notes:
    • Vol 28, pp 354-364, 10 FIG, 4 TAB, 5 REF, 1 APP
  • Authors:
    • FINCH, D M
  • Publication Date: 1949

Media Info

  • Monograph Title: Proceedings of the Twenty-Eighth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 7-10, 1948
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00223503
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 19 1971 12:00AM