A methodology is formulated that measures the effects of illumination of rural at-grade intersections in quantifiable terms. Previous research indicated that accident reduction is a valid criteria for evaluating lighting effectiveness. The effectiveness of illumination in modifying seven accident measures was evaluated by an analysis of variance. No significant relationship between accident severity and illumination could be inferred from the data. A predictor of accident reduction was developed based on the ratio of night accidents to total accidents after illumination. Values derived using the predictor were found to agree reasonably well with actual values obtained in two previous studies. (Author Modified Abstract)

  • Record URL:
  • Supplemental Notes:
    • Report on Illinois Cooperative Highway Research Program Series-135. Prepared in cooperation with State of Illinois Dept. of Transportation and Federal Highway Administration.
  • Corporate Authors:

    University of Illinois, Urbana-Champaign

    Department of Civil and Environmental Engineering
    205 North Mathews Avenue
    Urbana, IL  United States  61801-2352
  • Authors:
    • Wortman, R H
    • Lipinski, Martin E
    • Fricke, L B
    • Grimwade, W P
    • Kyle, A F
  • Publication Date: 1972-11

Media Info

  • Pagination: 108 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00046221
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: UILU-ENG-72-2022 Engr Study
  • Files: NTIS, TRIS
  • Created Date: Jul 31 1976 12:00AM