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The illuminated surface areas of HID and tungsten-halogen headlamps in the U.S.

dc.contributor.authorSchoettle, Brandonen
dc.contributor.authorSivak, Michaelen_US
dc.contributor.authorFlannagan, Michael J.en_US
dc.contributor.authorAdachi, G.en_US
dc.date.accessioned2007-02-16T19:29:39Z
dc.date.available2007-02-16T19:29:39Z
dc.date.issued2002
dc.identifier96270en
dc.identifier.otherUMTRI-2002-32en
dc.identifier.otherPB2003-101527en
dc.identifier.urihttps://hdl.handle.net/2027.42/49463
dc.descriptionIncludes bibliographical references (p. 9-10)en
dc.description.abstractThis study was designed to compare the illuminated surface areas of HID and tungstenhalogen low-beam headlamps in the U.S. A sample of 20 tungsten-halogen lamps and 17 HID lamps for model year 2000 vehicles in the U.S. was examined. The illuminated surface area was determined using a modified version of an ECE method for evaluating the illuminated surface of signaling devices. The main finding is that the HID low beams generally have smaller illuminated surface areas than do the tungsten-halogen low beams. Because smaller light sources result in more discomfort glare (presumably via greater luminance), the present finding suggests that the smaller illuminated area is one reason for drivers reporting more discomfort from HID lamps. An implication is that the increased discomfort from HID lamps could be reduced by increasing their illuminated surface area.en
dc.description.sponsorshipMichigan University, Ann Arbor, Industry Affiliation Program for Human Factors in Transportation Safetyen
dc.formatill.en
dc.format.extent14en
dc.format.extent516432 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen
dc.publisherUniversity of Michigan, Ann Arbor, Transportation Research Instituteen
dc.subject.otherHeadlampsen
dc.subject.otherEffectivenessen
dc.subject.otherResolutionen
dc.subject.otherTesting/ Measuresen
dc.subject.otherBrightness/ Light Intensity/ Illuminationen
dc.subject.otherEvaluative Methodsen
dc.subject.otherUnited Statesen
dc.subject.otherLowbeam Headlampsen
dc.subject.otherHID Headlampsen
dc.titleThe illuminated surface areas of HID and tungsten-halogen headlamps in the U.S.en
dc.title.alternativeThe illuminated surface areas of high intensity discharge and tungsten-halogen headlamps in the United Statesen
dc.typeTechnical Reporten_US
dc.subject.hlbsecondlevelTransportation
dc.subject.hlbtoplevelEngineering
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/49463/1/UMTRI-2002-32.pdfen_US
dc.owningcollnameTransportation Research Institute (UMTRI)


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