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Author Leccese, F.; Leonowicz, Z.
Title Intelligent wireless street lighting system. Type Journal Article
Year 2012 Publication Environmental and Electrical Engineering, 11th International Conference Abbreviated Journal
Volume Issue Pages 958–961
Keywords Lighting
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 642
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Author Monsere, C.M.; Fischer, E.L.
Title Safety effects of reducing freeway illumination for energy conservation Type Journal Article
Year 2008 Publication Accident; Analysis and Prevention Abbreviated Journal Accid Anal Prev
Volume 40 Issue 5 Pages 1773-1780
Keywords Lighting; Accidents, Traffic/*statistics & numerical data; *Automobile Driving; *Conservation of Energy Resources; Environment Design; Humans; *Lighting; Models, Statistical; Oregon; Safety; Wounds and Injuries/epidemiology
Abstract The addition of illumination where none was present is generally believed to have a positive effect on motor vehicle safety; reducing the frequency, as well as the severity of crashes. The operational cost of illumination, however, can make it a candidate for conservation during periods of high energy costs. In response to a forecasted energy shortage, the Oregon Department of Transportation selectively reduced illumination on interstate highways as part of an energy-saving effort. The reductions occurred at 44 interchanges and along 5.5 miles of interstate highway. This paper presents the results of a crash-based analysis of the changes in safety performance using an empirical-Bayes observational methodology. The study found an increase in reported crashes where the lineal lighting was reduced both in total crashes (28.95%, P=0.05) and injury night crashes (39.21%, P=0.07). Where full interchange lighting was reduced to partial lighting, a 2.46% increase (P=0.007) in total night crashes was observed. Injury night crashes, however, decreased by 12.16% (P<0.001) though day injury crashes also decreased at these locations. Unexpectedly, for interchanges where illumination was reduced from partial plus to partial, a 35.24% decrease (P<0.001) in total crashes and 39.98 (P<0.001) decrease in injury night crashes was found, though again, day crashes also decreased.
Address Department of Civil & Environmental Engineering, Portland State University, P.O. Box 751, Portland, OR 97207-0751, USA. monsere@pdx.edu
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Language English Summary Language Original Title
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ISSN 0001-4575 ISBN Medium
Area Expedition Conference
Notes PMID:18760107 Approved no
Call Number LoNNe @ kagoburian @ Serial 643
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Author E. Olvera-Gonzalez; D. Alaniz-Lumbreras; V. Torres-Argüelles; E. González-Ramírez; J. Villa-Hernández; M. Araiza-Esquivel; R. Ivanov-Tsonchev; C. Olvera-Olvera; V.M. Castaño
Title A LED-based smart illumination system for studying plant growth Type Journal Article
Year 2013 Publication Lighting Research and Technology Abbreviated Journal
Volume Issue Pages 1-12
Keywords Lighting
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 644
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Author Peden, M.; Scurfield, R.; Sleet, D.; Mohan, D.; Hyder, A. A.; Jarawan, E.; Mathers, C.
Title World report on road traffic injury prevention. Type Journal Article
Year 2004 Publication Abbreviated Journal
Volume Issue Pages
Keywords Lighting
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 645
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Author Scott, R.
Title THE RELATIONSHIP BETWEEN ROAD LIGHTING QUALITY AND ACCIDENT FREQUENCY – TRRL LABORATORY REPORT 929. Type Journal Article
Year 1980 Publication Abbreviated Journal
Volume Issue Pages
Keywords Lighting; quality; accident rate; accident; frequency; luminance; glare; uniformity; urban area; daylight; darkness; surfacing; pedestrian
Abstract many studies have related changes in accident frequency to the presence of street lighting, and a few have examined its variation over a range of lighting quality, as measured by illuminance. this investigation attempts to find which of several measures of lighting (describing quantity – as represented by luminance or illuminance – uniformity and glare) most clearly explain variations in accident frequency. about 100 lit sites, almost all in built-up areas, were measured for lighting quality in dry-road conditions. the lighting variables measured were related to the dark:day ratios of accident frequency for the same sites. the strongest relationship found was that for average road surface luminance: in the range 0.5-2.0 candelas/m2, it is estimated that an increase of 1 cd/m2 is associated with a 35 per cent lower accident ratio. other measures of luminance and illuminance were also found to be related to accident ratio (and to each other), but not as clearly as was average road luminance, which is therefore the preferred explanatory variable. analysis of pedestrian and non-pedestrian accidents separately did not reveal a relationship between the former and lighting quality. in contrast, non-pedestrian accidents showed similar relationships to those for all accidents, with the addition of a possible relationship with overall uniformity of luminance.(a)
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 647
Permanent link to this record