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:
  • Street lighting
  • Roundabouts
• 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."
  More +
• Format:
  PDF
• Funding:
  18233
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25289/dot_25289_DS1.pdf
• File Type:
  [PDF - 2.00 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:29c62fc283ef64226cab5fc87561c4a63ddaac97ae26c9596ca43aaddf4830fd7e858916130a05077da480d648913e7573b24c2fd8c67bf1208b6dbf1f21d88a