Demonstration of roundabout lighting based on the ecoluminance approach.

Details

• Creators:
  Bullough, John D. ; Rea, Mark Stanley, 1950- ; Snyder, Jeremy D. ; Skinner, Nicholas P. ; Rizzo, P. ; Besenecker, Ute
• Corporate Creators:
  Rensselaer Polytechnic Institute. Lighting Research Center
• Corporate Contributors:
  New York State Energy Research and Development Authority
• Subject/TRT Terms:
  Roundabouts Street Lighting
• Publication/ Report Number:
  18233/C-08-03
• Resource Type:
  Tech Report
• Geographical Coverage:
  New York
• Corporate Publisher:
  New York State Energy Research and Development Authority
• Abstract:
  "Roundabout lighting consisting of pole-mounted high pressure sodium luminaires can be energy intensive
  
  and does not necessary provide clear delineation for drivers and pedestrians navigating a roundabout. Using
  
  the ecoluminance concept developed in a previous study, lighting integrated with vegetation using lower
  
  mounting heights and reflected light from plants and retroreflective elements, it could be possible to
  
  provide illumination at a roundabout using substantially less energy. Two short term lighting
  
  demonstrations, using the ecoluminance approach and using lower-wattage luminaires producing “white”
  
  illumination, were conducted at a real-world roundabout location in New York State. Feedback from
  
  transportation engineers and members of the public was used to refine the ecoluminance concept for a final
  
  lighting demonstration, consisting of shrubs and trees in the central roundabout island, landscape lighting
  
  for these items, pedestrian bollard lighting at crosswalks, overhead light-emitting diode (LED) luminaires
  
  in sidewalk and roadway areas, and retroreflective markers to delineate the perimeter of the central island.
  
  Photometric measurements confirmed the simulations performed during the design phase, and supported
  
  that pedestrians and roadway elements were visible to drivers and pedestrians. Observations of approaching
  
  vehicle speeds with the ecoluminance system installed and with the conventional lighting installed revealed
  
  little difference in approach speeds. The ecoluminance system had similar initial costs, mainly because of
  
  high LED equipment costs (which are decreasing over time) and used only one-fourth the energy of the
  
  conventional roundabout lighting system."
  
  
• Format:
  PDF
• Funding:
  18233
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c644682f7d22cb8317f8f4951e922eaff925975fd5d3150d570f47f53c06ec79
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25289/dot_25289_DS1.pdf
• File Type:
  [PDF - 2.00 MB ]