TUNNEL LIGHTING IN EUROPE

A SET OF PRINCIPLES EMBODIED IN 1971 RECOMMENDATIONS OF THE CIE (COMMISSION INTERNATIONALE DE L'ECLAIRAGE - INTERNATIONAL COMMISSION ON LIGHTING) IS BEGINNING TO BE GENERALLY ACCEPTED THROUGHOUT EUROPE, SO THAT IT IS NOW POSSIBLE TO SPEAK OF A EUROPEAN SYSTEM OF TUNNEL LIGHTING." THE RECOMMENDATIONS COME DOWN TO THREE MAIN POINTS: THE DRIVER SHOULD BE ABLE TO LOOK INTO THE TUNNEL DURING HIS APPROACH TO IT; VISUAL ADAPTATION TO THE LOWER LEVELS OF LIGHTING MUST BE POSSIBLE, WHEN THE DRIVER IS EITHER CLOSE TO OR IN THE TUNNEL; AND THE TUNNEL INTERIOR SHOULD BE LIGHTED TO A HIGH STANDARD. ONE QUESTION, HOWEVER, HAS NOT BEEN CLARIFIED IN THE RECOMMENDATIONS: WHAT EXACTLY SHOULD BE TAKEN AS THE RELEVANT VALUE OF LUMINANCE IN THE OPEN? A FORMULA IS PRESENTED TO DEAL WITH THIS QUESTION. THE PRACTICE OF TUNNEL LIGHTING IN EUROPE IS DISCUSSED BRIEFLY IN RELATION TO THREE TYPES OF TUNNELS: LONG MOUNTAIN TUNNELS, INTERMEDIATE-LENGTH TUNNELS WITH HEAVY TRAFFIC, AND LONG URBAN UNDERPASSES.

  • Authors:
    • SCHREUDER, D A
  • Publication Date: 1972-8

Media Info

  • Features: Figures; References;
  • Pagination: p. 28-32
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00221788
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 3 1973 12:00AM