TILTING OF STREET LIGHTING LANTERNS

Street lighting lanterns are frequently installed with a few degrees of upward tilt, in order to improve the appearance of the lantern arm assembly, or to achieve better spread of light across the road. Both these factors are discussed, and in either case, a knowledge of the effect of tilt on the distribution of luminous intensities relative to the roadway is required, to check that the performance in respect of glare control or distribution of light along the road is not depreciated. The above effect can be determined by calculating the change in direction of specific intensities for a given degree of tilt. A mathematical procedure for doing this is outlined. Comments are made on the application of lantern tilt to:- (A) traffic routes having trees bordering and overhanging the carriageway, and (B) large intersections where lighting columns can only be located around the perimeter./TRRL/

• Corporate Authors:

  Illuminating Engineering Society

  York House, 199 Westminster Bridge Road
  London SE1 7UN,   England 
• Authors:
  • Whittemore, J
• Publication Date: 1972-8

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 99-101
• Serial:
  • Lighting Review
  • Issue Number: 8
  • Publisher: Illuminating Engineering Society

Subject/Index Terms

• TRT Terms: Angularity; Brightness; Glare; Light; Street lighting
• Uncontrolled Terms: Angles
• Old TRIS Terms: Tilting
• ITRD Terms: 6427: Angle; 9016: Distribution (gen); 5911: Efficiency; 1677: Glare; 455: Junction; 516: Lantern; 505: Light intensity
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00126327
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Apr 21 1976 12:00AM