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Effects of the spectra of innovative sources in signal lamps

dc.contributor.authorSullivan, John M.en
dc.contributorFlannagan, M. J.en
dc.date.accessioned2007-02-13T21:22:18Z
dc.date.available2007-02-13T21:22:18Z
dc.date.issued2000
dc.identifier92755en
dc.identifier.otherUMTRI-2000-7en
dc.identifier.otherPB2000-104208en
dc.identifier.urihttps://hdl.handle.net/2027.42/49414
dc.description.abstractVarious new light sources, such as light emitting diodes (LEDs) and neon, have recently been adopted for signal lamps, or are being considered for such use. These sources expand the range of spectral power distributions (SPDs) that are of concern for automotive applications. This report reviews the interactions of such SPDs with visual conditions that are of special importance in driving and that might have spectrally selective effects. Such conditions include spectrally selective windshields, weather conditions (fog and rain), and certain visual conditions of drivers (color blindness, yellowing of the lens of the eye with aging, and wearing of sunglasses). Most of the effects of SPD can be expected to be minor. Generally speaking, even though the chromaticity constraints that are applied to signal lamps allow a range of SPDs, the chromaticity constraints are sufficient to ensure that visual performance will be predictable. A few exceptions are noted.en
dc.description.sponsorshipMichigan University, Ann Arbor, Industry Affiliation Program for Human Factors in Transportation Safetyen
dc.format26 ref. chart. graphsen
dc.format.extent49en
dc.format.extent225732 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen
dc.publisherUniversity of Michigan, Ann Arbor, Transportation Research Instituteen
dc.subject.otherWindshieldsen
dc.subject.otherLighting Systems/ Signal Systemsen
dc.subject.otherLighting Componentsen
dc.subject.otherWeatheren
dc.subject.otherColor/ Chromaticityen
dc.subject.otherVision Disordersen
dc.subject.otherVisionen
dc.subject.otherColor Senseen
dc.subject.otherTinted Lenses/ Sunglassesen
dc.titleEffects of the spectra of innovative sources in signal lampsen
dc.typeTechnical Reporten_US
dc.subject.hlbsecondlevelTransportation
dc.subject.hlbtoplevelEngineering
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/49414/1/UMTRI-2000-7.pdfen_US
dc.owningcollnameTransportation Research Institute (UMTRI)


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