Rise-time requirements for high-intensity discharge headlights
dc.contributor.author | Sivak, Michael | en |
dc.contributor.author | Flannagan, M. J. | en_US |
dc.contributor.author | Schoettle, B. | en_US |
dc.contributor.author | Nakata, | en_US |
dc.date.accessioned | 2007-02-15T20:42:24Z | |
dc.date.available | 2007-02-15T20:42:24Z | |
dc.date.issued | 2001 | |
dc.identifier | 94286 | en |
dc.identifier.other | UMTRI-2001-14 | en |
dc.identifier.other | PB2001-104796 | en |
dc.identifier.uri | https://hdl.handle.net/2027.42/49445 | |
dc.description.abstract | This study had two objectives. The first, more general objective was to provide background information about the maximum rise time that should be allowed for highintensity discharge headlamps. The second, more specific objective was to evaluate whether SAE’s current, rather stringent, recommendations should be relaxed or retained. To achieve these objectives, we considered several scenarios in which having early illumination is potentially of consequence. The scenarios included turning on the headlamps when starting to drive, turning on the headlamps when entering a dark tunnel, and switching between beams. New empirical data collected for this study included actual delays between turning on headlamps at night and starting to drive, and rise and falloff functions of tungsten-halogen low beams and high beams. We concluded that rise-time requirements should be more stringent for systems with noncontinuous low beam than for systems with continuous low beam, as is the case in the current SAE recommendations. Furthermore, we concluded that the current SAErecommendations for systems with noncontinuous low beam are justifiable. On the other hand, we concluded that the SAE recommendations for systems with continuous low beams could be relaxed by eliminating all minimum light-output requirements for delays of less than one second. | en |
dc.description.sponsorship | Michigan University, Ann Arbor, Industry Affiliation Program for Human Factors in Transportation Safety | en |
dc.format | 6 ref. graphs. tables | en |
dc.format.extent | 17 | en |
dc.format.extent | 446549 bytes | |
dc.format.mimetype | application/pdf | |
dc.language | English | en |
dc.publisher | University of Michigan, Ann Arbor, Transportation Research Institute | en |
dc.subject.other | Headlamps | en |
dc.subject.other | Frequency/ Time | en |
dc.subject.other | Testing/ Measures | en |
dc.subject.other | HID Headlamps | en |
dc.title | Rise-time requirements for high-intensity discharge headlights | en |
dc.type | Technical Report | en_US |
dc.subject.hlbsecondlevel | Transportation | |
dc.subject.hlbtoplevel | Engineering | |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/49445/1/UMTRI-2001-14.pdf | en_US |
dc.owningcollname | Transportation Research Institute (UMTRI) |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.