| Records |
| Author |
Kersavage, K.; Skinner, N.P.; Bullough, J.D.; Garvey, P.M.; Donnell, E.T.; Rea, M.S. |
Title  |
Investigation of flashing and intensity characteristics for vehicle-mounted warning beacons |
Type |
Journal Article |
| Year |
2018 |
Publication |
Accident Analysis & Prevention |
Abbreviated Journal |
Accident Analysis & Prevention |
| Volume |
119 |
Issue |
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Pages |
23-28 |
| Keywords |
Security; Public Safety; Lighting |
| Abstract |
Reducing the potential for crashes involving front line service workers and passing vehicles is important for increasing worker safety in work zones and similar locations. Flashing yellow warning beacons are often used to protect, delineate, and provide visual information to drivers within and approaching work zones. A nighttime field study using simulated workers, with and without reflective vests, present outside trucks was conducted to evaluate the effects of different warning beacon intensities and flash frequencies. Interactions between intensity and flash frequency were also analyzed. This study determined that intensitiesof 25/2.5 cd and 150/15 cd (peak/trough intensity) provided the farthest detection distances of the simulated worker. Mean detection distances in response to a flash frequency of 1 Hz were not statistically different from those in response to 4 Hz flashing. Simulated workers wearing reflective vests were seen the farthest distances away from the trucks for all combinations of intensity and flash frequency. |
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Series Issue |
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Edition |
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| ISSN |
0001-4575 |
ISBN |
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Approved |
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| Call Number |
GFZ @ kyba @ |
Serial |
1950 |
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| Author |
Nasar, J.L.; Bokharaei, S. |
| Title |
Impressions of Lighting in Public Squares After Dark |
Type |
Journal Article |
| Year |
2017 |
Publication |
Environment & Behavior |
Abbreviated Journal |
Env. & Behav. |
| Volume |
43 |
Issue |
3 |
Pages |
227-254 |
| Keywords |
Psychology; public lighting; public safety; security; crime; perception; outdoor lighting |
| Abstract |
Lighting may affect impressions of public squares. Following studies on office interior lighting, the present research manipulated three modes of lighting—non-uniform–uniform, peripheral–overhead, and dim–bright—in three virtual squares. One study had 32 participants (15 men, 17 women) judge the spaciousness and privacy of each of the 24 public squares. A second study had a different group of 30 participants (16 men, 14 women) rate the appeal, safety from crime, and excitement of each square. Study 1 found that judged spaciousness increased with uniform and bright lighting, and that privacy increased with non-uniform, dim, and peripheral lighting. Study 2 found that rated appeal increased with uniform and bright lighting, as did safety from crime and excitement. Across the two studies, the uniform and bright lighting conditions contributed most to the kinds of favorable experiences people might expect to have in public spaces after dark. |
| Address |
City & Regional Planning, Ohio State University, 200 Knowlton Hall 275 W Woodruff Ave., Columbus, OH 43210, USA. Email: nasar.1(at)osu.edu |
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Thesis |
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| Publisher |
SAGE |
Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
English |
Original Title |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
0013-9165 |
ISBN |
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Medium |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
1390 |
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| Author |
Fotios, S.; Monteiro, A.L.; Uttley, J. |
| Title |
Evaluation of pedestrian reassurance gained by higher illuminances in residential streets using the day–dark approach |
Type |
Journal Article |
| Year |
2018 |
Publication |
Lighting Research & Technology |
Abbreviated Journal |
Lighting Research & Technology |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Vision; Psychology; Security |
| Abstract |
A field study was conducted to investigate how changes in the illuminance affect pedestrian reassurance when walking after dark in an urban location. The field study was conducted in daytime and after dark in order to employ the day–dark approach to analysis of optimal lighting. The results suggest that minimum illuminance is a better predictor of reassurance than is mean illuminance. For a day–dark difference of 0.5 units on a 6-point response scale, the results suggest a minimum horizontal illuminance of approximately 2.0 lux. |
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Place of Publication |
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Original Title |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
1477-1535 |
ISBN |
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Medium |
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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2159 |
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| Author |
Wanvik, P.O. |
| Title |
Effects of road lighting on motorways |
Type |
Journal Article |
| Year |
2009 |
Publication |
Traffic Injury Prevention |
Abbreviated Journal |
Traffic Inj Prev |
| Volume |
10 |
Issue |
3 |
Pages |
279-289 |
| Keywords |
Lighting; Public Safety; Security |
| Abstract |
OBJECTIVES: The study has three objectives. The first is to investigate how the effect of road lighting on motorway accidents varies with different weather and road surface conditions. The second is to evaluate the future benefit of road lighting as a safety measure on motorways. The third is to evaluate the need for further research in the field of motorway lighting. METHOD: This article presents a cross-sectional study of the effects of road lighting on motorways mainly in The Netherlands. The main source of data is a Dutch database of accidents covering the period 1987-2006, but British and Swedish data are also used. RESULTS: The effect of road lighting on motorways is found to be greater in The Netherlands than in Great Britain or Sweden. Reasons for this are not known. Effects are found to vary according to background characteristics and are lesser during precipitation than during fine weather and on wet road surfaces than on dry surfaces. No effect of road lighting is found during fog. Collision with light poles constitutes a large number of accidents on lit motorways and reduces the safety effect of road lighting. CONCLUSIONS: The effect of road lighting on injury accidents during darkness is found to be very high (-49%) on Dutch motorways. However, the effect seems to vary between countries. Collisions with light poles reduce the effect of road lighting. Road lighting will probably be an effective safety measures on motorways for many years. In the long term, however, the benefit of road lighting will probably be reduced along with the implementation of new vehicle and road technology. Modern technology permits a continuous adaptation of luminance levels to optimize the effect of road lighting on safety while at the same time minimizing energy consumption. However, more detailed knowledge concerning the effects of road lighting at different lighting levels is needed in order to use this technology effectively. Alternative or additional measures like LED guide lights and light road surfaces also need to be evaluated. |
| Address |
Norwegian Public Roads Administration, Region South, Serviceboks 723, Arendal, Norway. per.wanvik@vegvesen.no |
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| Language |
English |
Summary Language |
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Original Title |
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Series Issue |
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Edition |
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| ISSN |
1538-9588 |
ISBN |
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| Notes |
PMID:19452370 |
Approved |
no |
| Call Number |
LoNNe @ kyba @ |
Serial |
1788 |
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| Author |
Park, H.-K.; Gu, J.-H.; Lee, K.-M. |
| Title |
A study on selecting of Light Cutoff Panel depending on the installation condition using the lighting simulation |
Type |
Journal Article |
| Year |
2016 |
Publication |
Journal of the Korea Academia-Industrial cooperation Society |
Abbreviated Journal |
Journal of the Korea Academia-Industrial cooperation Society |
| Volume |
17 |
Issue |
2 |
Pages |
246-251 |
| Keywords |
Lighting; Light cutoff panel; Light pollution; Light trespass; Relux; Security light |
| Abstract |
The use of security lighting that emits spill light is considered a cause of light trespass problems in the residential areas. Therefore, a cutoff panel was installed as an alternative way to reduce light trespass. On the other hand, it has another problem in that it is less effective and is not good enough for aesthetics and safety. In this study, a light cutoff panel was designed and manufactured to reduce the light trespass, and the structure of a proper light cutoff panel was studied. Using a goniophotometer, the light distribution file (IES file) was extracted and the characteristics of light distribution were analyzed using the RELUX program. The results showed that the reduction of spilt light in the backward direction was decreased significantly for all types of light cutoff panels except the coated globe. In the case of a black powder coated light cutoff panel, the forward light caused by light reflected from the surface of the light cutoff panel was also reduced, which means that the black powder coated light cutoff panel is effective in the performance of light cutoff in the forward and backward directions. In addition, the coated glove increased the spilt light in the forward and backward directions because it reflects the upward light to go down. A 90 % accuracy between the measurement value of light trespass and the expected value of the light trespass was obtained from a simulation. |
| Address |
National Institute of Environmental Research; mossad61(at)korea.kr |
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Thesis |
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| Publisher |
KoreaScience |
Place of Publication |
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Editor |
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| Language |
Korean |
Summary Language |
English |
Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1975-4701 |
ISBN |
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Medium |
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Conference |
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| Notes |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
1448 |
| Permanent link to this record |
