The present method of assessing the relative value of installing lighting on an unlit section of trunk or principal road depends on the expected saving in personal injury accidents. The author regards this method as one of "cure" rather than "prevention" and briefly mentions the following alternative based on evaluation assessment schemes used in industry:- 1. The ranking method. 2. The classification or grading method. 3. The factor compression method, and 4. The points assessment method. The last mentioned method is considered the most applicable to road lighting. It takes into account a number of factors concerning the road in question, each with varying levels of importance. The factors include urban or rural locality, average daily traffic flow, mean traffic speed, speed limit restriction, number of daylight accidents, number of night accidents, number of 'T' junctions, number of pedestrian crossings, road alignment, proximity to industrial housing development, hospital, schools etc. The section of road to be lighted is analysed by applying each of these factors to it, and points are scored depending upon which level is applicable. Other advantages of this method over the present one are briefly discussed. /TRRL/

  • Corporate Authors:

    Association of Public Lighting Engineers

    78 Buckingham Gate, Westminster
    London SW1E 6PF,   England 
  • Authors:
    • Cairns, S
  • Publication Date: 1974-9

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 145-152
  • Serial:
    • Public Lighting
    • Volume: 39
    • Issue Number: 166
    • Publisher: Association of Public Lighting Engineers

Subject/Index Terms

Filing Info

  • Accession Number: 00096504
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jul 15 1975 12:00AM