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Author (up) Skinner, N., & Bullough, J. doi  openurl
  Title Influence of LED Spectral Characteristics on Glare Recovery Type Journal Article
  Year 2019 Publication SAE Technical Paper 2019-01-0845 Abbreviated Journal  
  Volume Issue Pages  
  Keywords Vision; Lighting; Public Safety  
  Abstract Headlight glare is a major concern of the driving public. In the past couple of years there have been concerns expressed about the use of light emitting diode (LED) lighting technologies and possible impacts LEDs may have on people, including circadian disruption, retinal hazards, and glare. Under typical use cases, vehicle headlight exposures are insufficient to cause circadian disruption or retinal damage, but can result in disability and discomfort glare, as well as glare recovery. In general, white LEDs used for illumination have greater short-wavelength content than halogen lamps used in many headlights, and short wavelengths have been implicated in visual discomfort from bright lights at night. Previous literature is inconsistent regarding whether the spectral (color) content of a glare source affects the amount of recovery time needed to see objects, following exposure to a bright light such as a vehicle headlight. Warm and cool white LEDs were used as glare sources in the present study. They were energized and exposed to study participants at one of two illuminances (low, high) for either 3 or 6 seconds, after which participants were asked to identify the orientation of a Landolt ring target located on a display screen behind the glare source. Identification times were unaffected by the spectral content of the LED, but were correlated with the “dosage” of light from the glare sources, defined as the product of illuminance and duration. Although cool white LEDs will tend to be judged as creating more discomfort than warm white LEDs, they do not result in longer glare recovery times under the range of conditions used in this study.  
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  Call Number IDA @ intern @ Serial 2299  
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Author (up) Smith, L.A.; Larsen, C.A.; Johnson, K.L. url  doi
openurl 
  Title Are “quiet-at-night” initiatives impacting staff alertness? Type Journal Article
  Year 2017 Publication Nursing Abbreviated Journal Nursing  
  Volume 47 Issue 1 Pages 61-62  
  Keywords Public Safety; Human Health  
  Abstract PATIENT SATISFACTION scores have been in the national spotlight since 2007 when Medicare began to link hospital reimbursement with Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) scores. Patients are asked to respond to this question: “During this hospital stay, how often was the area around your room quiet at night?” (Answer choices: Never, sometimes, usually, and always).1 Many hospitals, including ours, have worked diligently to improve patient satisfaction with quiet-at-night initiatives.

This article describes our quiet-at-night initiatives and concerns that these initiatives were impairing our night-shift staff's alertness. We addressed these concerns by conducting a survey; its results led us to change our initiatives to improve staff wakefulness while maintaining patient satisfaction.
 
  Address Lisa A. Smith is an administrative nursing supervisor at Banner University Medical Center-Phoenix in Phoenix, Ariz. Charles A. Larsen is a director of nursing at Banner Baywood Medical Center and Banner Heart Hospital in Mesa, Ariz. Karen L. Johnson is director of nursing research at Banner Health in Phoenix, Ariz  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0360-4039 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:28027137 Approved no  
  Call Number LoNNe @ kyba @ Serial 1617  
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Author (up) Steinbach, R.; Perkins, C.; Tompson, L.; Johnson, S.; Armstrong, B.; Green, J.; Grundy, C.; Wilkinson, P.; Edwards, P. url  doi
openurl 
  Title The effect of reduced street lighting on road casualties and crime in England and Wales: controlled interrupted time series analysis Type Journal Article
  Year 2015 Publication Journal of Epidemiology Community Health Abbreviated Journal J. Epidemiol. Community Health  
  Volume 69 Issue 11 Pages  
  Keywords Safety; public safety; England; Wales; United Kindgom; traffic safety; street lighting; outdoor lighting; crime; security; light adaptation strategies  
  Abstract Background: Many local authorities in England and Wales have reduced street lighting at night to save money and reduce carbon emissions. There is no evidence to date on whether these reductions impact on public health. We quantified the effect of 4 street lighting adaptation strategies (switch off, part-night lighting, dimming and white light) on casualties and crime in England and Wales.

Methods: Observational study based on analysis of geographically coded police data on road traffic collisions and crime in 62 local authorities. Conditional Poisson models were used to analyse longitudinal changes in the counts of night-time collisions occurring on affected roads during 2000–2013, and crime within census Middle Super Output Areas during 2010–2013. Effect estimates were adjusted for regional temporal trends in casualties and crime.

Results: There was no evidence that any street lighting adaptation strategy was associated with a change in collisions at night. There was significant statistical heterogeneity in the effects on crime estimated at police force level. Overall, there was no evidence for an association between the aggregate count of crime and switch off (RR 0.11; 95% CI 0.01 to 2.75) or part-night lighting (RR 0.96; 95% CI 0.86 to 1.06). There was weak evidence for a reduction in the aggregate count of crime and dimming (RR 0.84; 95% CI 0.70 to 1.02) and white light (RR 0.89; 95% CI 0.77 to 1.03).

Conclusions: This study found little evidence of harmful effects of switch off, part-night lighting, dimming, or changes to white light/LEDs on road collisions or crime in England and Wales.
 
  Address Department of Population Health, London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, UK; Phil.Edwards(at)lshtm.ac.uk  
  Corporate Author Thesis  
  Publisher BMJ Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1470-2738 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 1224  
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Author (up) Stone, T.; Santoni de Sio, F.; Vermaas, P.E. url  doi
openurl 
  Title Driving in the Dark: Designing Autonomous Vehicles for Reducing Light Pollution Type Journal Article
  Year 2019 Publication Science and Engineering Ethics Abbreviated Journal Sci Eng Ethics  
  Volume Issue Pages 1-17  
  Keywords Society; Darkness; Planning; Public Safety; Design for values  
  Abstract This paper proposes that autonomous vehicles should be designed to reduce light pollution. In support of this specific proposal, a moral assessment of autonomous vehicles more comprehensive than the dilemmatic life-and-death questions of trolley problem-style situations is presented. The paper therefore consists of two interrelated arguments. The first is that autonomous vehicles are currently still a technology in development, and not one that has acquired its definitive shape, meaning the design of both the vehicles and the surrounding infrastructure is open-ended. Design for values is utilized to articulate a path forward, by which engineering ethics should strive to incorporate values into a technology during its development phase. Second, it is argued that nighttime lighting-a critical supporting infrastructure-should be a prima facie consideration for autonomous vehicles during their development phase. It is shown that a reduction in light pollution, and more boldly a better balance of lighting and darkness, can be achieved via the design of future autonomous vehicles. Two case studies are examined (parking lots and highways) through which autonomous vehicles may be designed for “driving in the dark.” Nighttime lighting issues are thus inserted into a broader ethics of autonomous vehicles, while simultaneously introducing questions of autonomous vehicles into debates about light pollution.  
  Address Department Ethics/Philosophy of Technology, Delft University of Technology, Delft, Netherlands  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1353-3452 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:30903370 Approved no  
  Call Number GFZ @ kyba @ Serial 2277  
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Author (up) Suk, J.Y.; Walter, R. url  doi
openurl 
  Title Street Lighting and Public Safety: New Nighttime Lighting Documentation Method Type Journal Article
  Year 2018 Publication ARCC Conference Repository Abbreviated Journal  
  Volume Issue Pages  
  Keywords Public Safety; Lighting  
  Abstract While the rapid transition of street lighting technologies is occurring across the country for its promising benefits of high energy efficiency, higher intensity, long lamp life, and low maintenance, there is a lack of understanding on the impacts from street lighting’s physical characteristics on public safety. Nighttime lighting and its impact on the incidence of crime and roadway accidents has been investigated since the 1960s in the United States and the United Kingdom. However, prior research has not presented any scientific evidence such as quantified lighting characteristic data and its impacts on public safety because they relied on subjective survey inputs or over-simplified quantification of nighttime lighting conditions. To overcome the limitation of previous studies, extensive documentation of street lighting characteristics was conducted in downtown San Antonio, Texas, which adopts both conventional and new street lighting technologies. Two different sets of light level data were collected on roadways in order to measure the amount of light falling on the ground and on drivers’ eyes inside a car. Correlated color temperature and a color rendering index of nighttime lighting were recorded. The collected lighting data was mapped in a Geographic Information Systems database in order to spatially analyze lighting characteristics. The paper first highlights the potential issues with lighting analysis in previous studies. Next, the proposed research methodology to address these issues for both data collection and spatial analyses is explained. Finally, the preliminary documentation and analysis of street lighting characteristics are presented.  
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  Language English Summary Language Original Title  
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  Notes Approved no  
  Call Number NC @ ehyde3 @ Serial 2103  
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