The author examines the relative merits of the three main methods of saving energy. Switching out units and reducing lighting in the early morning period are not considered to be satisfactory methods since any form of reduction in street lighting increases accidents. Often the cost of accidents exceeds the additional cost of all-night lighting. The author gives examples of the benefits to be gained in the conversion of tungsten filament lamps to high or low pressure sodium. The relative power consumption of several types of light source are compared. By phasing the conversion programme to the normal group-lamp change period, the cost of new lamps may be minimised. Further benefits can be gained by using the most efficient design of lantern and control gear. A table is used to illustrate the range of power losses produced by four different makes of control gear. /TRRL/

  • Availability:
  • Corporate Authors:

    Municipal Engineering Publications, Limited

    178-202 Portland Street
    London W1N 6NH,   England 
  • Authors:
    • Dorrington, B
  • Publication Date: 1976-9


  • English

Media Info

  • Features: Photos; Tables;
  • Pagination: 2 p.
  • Serial:
    • Municipal Engineering
    • Volume: 153
    • Issue Number: 38
    • Publisher: Municipal Engineering Publications, Limited
    • ISSN: 0263-788X

Subject/Index Terms

Filing Info

  • Accession Number: 00149060
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Jun 22 1977 12:00AM