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Acceptable delays in switching between primary and secondary light sources in distributed lighting

dc.contributor.authorSivak, Michaelen
dc.contributorFlannagan, M. J.en
dc.date.accessioned2007-02-13T15:46:03Z
dc.date.available2007-02-13T15:46:03Z
dc.date.issued1999
dc.identifier91868en
dc.identifier.otherUMTRI-99-10en
dc.identifier.otherPB99-133662en
dc.identifier.urihttps://hdl.handle.net/2027.42/49398
dc.description.abstractThis report reviewed evidence concerning acceptable delays in switching between a primary and a secondary light source in distributed lighting. The specific question posed was as follows: The industry considers a delay of 100 ms technically achievable, but is it acceptable from the human factors point of view? The evidence considered included consequences for the quality of driver performance and possible startle effects. In discussing the quality of driver performance, the following aspects were considered: eyeblinks, voluntary occlusions of vision during driving, fixations away from straight ahead (on rearview mirrors, vehicle controls and displays, and navigation systems), head movements when checking traffic in the blind spots, and time-to-collision and time-to-lanecrossing measures. Possible effects of different implementations of the secondary light source (high-intensity discharge and incandescent) were also briefly discussed. Based on the available evidence concerning the quality of driver performance (excluding startle effects), a delay of 100 ms or less is unlikely to create safety problems. Furthermore, although little evidence exists on the likelihood and nature of startle responses, it is unlikely that a delay of 100 ms or less will lead to major negative startle consequences.en
dc.description.sponsorshipMichigan University, Ann Arbor, Industry Affiliation Program for Human Factors in Transportation Safetyen
dc.format37 ref. fig. tableen
dc.format.extent18en
dc.format.extent104704 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen
dc.publisherUniversity of Michigan, Ann Arbor, Transportation Research Instituteen
dc.subject.otherHeadlampsen
dc.subject.otherHighbeam Headlampsen
dc.subject.otherLowbeam Headlampsen
dc.subject.otherAttentionen
dc.subject.otherEye Movementsen
dc.titleAcceptable delays in switching between primary and secondary light sources in distributed lightingen
dc.typeTechnical Reporten_US
dc.subject.hlbsecondlevelTransportation
dc.subject.hlbtoplevelEngineering
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/49398/1/UMTRI-99-10.pdfen_US
dc.owningcollnameTransportation Research Institute (UMTRI)


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