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Author Bullough, J.D.; Skinner, N.P.; Plummer, T.T.
Title Assessment of an Adaptive Driving Beam Headlighting System: Visibility and Glare Type Journal Article
Year 2016 Publication Transportation Research Record: Journal of the Transportation Research Board Abbreviated Journal (down) Transportation Research Record: Journal of the Transportation Research Board
Volume 2555 Issue Pages 81-85
Keywords Lighting
Abstract Recent developments in solid-state lighting, sensor, and control technologies make new configurations for vehicle forward lighting feasible. Adaptive driving beam (ADB) systems build on systems that automatically switch from high- to low-beam headlights in the presence of oncoming vehicles. ADB systems can detect oncoming headlights and preceding taillights and reduce their intensity only in the direction of the other lights, while they maintain higher levels of illumination throughout the remainder of the field of view. The nominal benefit of ADB systems is the provision of high-beam levels of illumination in the forward scene, while glare is reduced to oncoming and preceding drivers, who perceive low-beam illumination levels. In this study, two dynamic field experiments were conducted: one experiment measured the ability of observers to identify the walking direction of roadside pedestrian targets with and without the use of the ADB system; the other experiment evaluated the discomfort glare elicited by the ADB system compared with the glare from conventional low- and high-beam headlights. The findings from both experiments were consistent with previous analytical and static field tests and suggested that ADB systems can offer safety benefits beyond those offered by conventional headlight systems.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0361-1981 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1618
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Author Bullough, J.D.; Skinner, N.P.
Title Real-World Demonstrations of Novel Pedestrian Crosswalk Lighting Type Journal Article
Year 2017 Publication Transportation Research Record: Journal of the Transportation Research Board Abbreviated Journal (down) Transportation Research Record: Journal of the Transportation Research Board
Volume 2661 Issue Pages 62-68
Keywords Lighting; Public Safety; Planning
Abstract Outdoor urban pedestrian lighting serves multiple purposes and should do so in the most efficient and economic manner. An important purpose of outdoor urban pedestrian lighting is to support the safety of pedestrians, particularly those who interact with adjacent vehicle traffic, while enhancing pedestrians’ perceptions of personal safety and security. A review of published literature, as well as the demonstration activities summarized, indicates the potential for bollard-level crosswalk lighting to enhance pedestrian visibility and to improve safety at crosswalks, particularly at locations where the presence of a crosswalk might not be expected by approaching drivers. Such locations include midblock crossings, roundabouts, and locations near schools and other public venues that might experience high levels of pedestrian traffic at sporadic or unexpected times.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0361-1981 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1723
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Author Bullough, J.D.
Title Human Factors Impacts of Light-Emitting Diode Airfield Lighting Type Journal Article
Year 2017 Publication Transportation Research Record: Journal of the Transportation Research Board Abbreviated Journal (down) Transportation Research Record: Journal of the Transportation Research Board
Volume 2626 Issue Pages 51-57
Keywords Lighting
Abstract Light-emitting diodes (LEDs) differ from incandescent light sources in several ways that are relevant to energy and maintenance requirements of airfield lighting systems. They have higher luminous efficacy and, when designed properly, have longer useful operating lives; both factors make LEDs attractive candidates for airfield lighting. The photometric, colorimetric, and temporal characteristics of LEDs also differ from those of incandescent light sources, and these can have important implications for the appearance of runway and taxiway lighting systems. The present paper reviews publications summarizing experimental and analytical investigations designed to assess these implications with respect to the following human factors impacts: color identification, brightness and glare, visibility in fog and haze, response to onset of flashing lights, and stroboscopic effects such as the phantom array. Overall, this review of experimental evidence suggests that, in addition to their reduced energy use and maintenance requirements, LED airfield lighting can be advantageous in comparison with incandescent lighting systems used to delineate airport runways and taxiways.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0361-1981 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1758
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Author Bassani, M.; Mutani, G.
Title Effects of Environmental Lighting Conditions on Operating Speeds on Urban Arterials Type Journal Article
Year 2012 Publication Transportation Research Record: Journal of the Transportation Research Board Abbreviated Journal (down) Transportation Research Record
Volume 2298 Issue 1 Pages 78-87
Keywords Lighting; Public Safety
Abstract Driver behavior is influenced by environmental lighting conditions on roads; in the literature, many studies report a reduced night–day accident ratio following improvements to lighting on different types of roads, with the results classified by severity and type of accident. Few studies, however, report the influence of lighting conditions on driver speed. This study investigates the principal factors that influence driver speed on arterial roads in Turin, Italy. The aim of this study was to analyze driver speed under different daylight and nighttime lighting conditions. Six arterial roads were selected for observation and the measurement of speeds and illuminance on the pavement surface. The results showed that illuminance, in addition to factors such as lane position, lane width, and the relevant speed limit, should be considered a variable that can influence driver speed. The study used a regression equation to predict operating speeds (V85) on urban arterials; the corresponding sensitivity analysis has made it possible to quantify the effects of the aforementioned variables on operating speed under different environmental lighting conditions.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0361-1981 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2872
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Author Luecke, C.; Wurtsbaugh, W.A.
Title Effects of Moonlight and Daylight on Hydroacoustic Estimates of Pelagic Fish Abundance Type Journal Article
Year 1993 Publication Transactions of the American Fisheries Society Abbreviated Journal (down) Transactions of the American Fisheries Society
Volume 122 Issue 1 Pages 112-120
Keywords animals; moonlight
Abstract To determine how moonlight and daylight affect hydroacoustic estimates of fish abundance, we used a dual-beam transducer and echo integration to survey pelagic fish (primarily Bonneville ciscoes Prosopium gemmifer) in Bear Lake, Utah and Idaho. During the new moon, the fish were dispersed (not schooling) below the thermocline, chiefly at the depths of 10–20 m. At full moon, they were dispersed but much closer to the bottom, where they were difficult to detect. Acoustic estimates offish density and biomass during full moons were approximately 50% of values derived during new moons. A diel survey during a new moon indicated that fish were widely dispersed in the water column at night, but formed schools at dawn. Our study indicated that light conditions must be standardized to insure consistent and comparable population estimates of some pelagic fishes.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0002-8487 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1563
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