Functional requirements for daytime running lights
dc.contributor.author | Rumar, K. | en_US |
dc.date.accessioned | 2007-06-20T15:26:02Z | |
dc.date.available | 2007-06-20T15:26:02Z | |
dc.date.issued | 2003 | |
dc.identifier | 96638 | en_US |
dc.identifier.other | UMTRI-2003-11 | en_US |
dc.identifier.other | PB2003-104630 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/55184 | |
dc.description | "May 2003." | en_US |
dc.description | Includes bibliographical references (p. 48-58) | en_US |
dc.description.abstract | Late detection is the basic mechanism responsible for daytime collisions. One goal of this report is to review evidence concerning the effectiveness of daytime running lights (DRLs) to increase vehicle conspicuity, and thereby facilitate vehicle detection and reduce the number of daytime collisions (including collisions between cars and unprotected road users). Another goal is to recommend lighting characteristics of dedicated DRLs. The available accident studies indicate that DRLs are effective in reducing the number of daytime collisions. Furthermore, this reduction is larger for pedestrians and cyclists than for motor vehicles. Evidence indicates that the minimum intensity of DRLs should be about 400 cd. Although increased intensity of DRLs results in increased effectiveness, it also results in increased glare. Consequently, an upper limit on the intensity of DRLs is justified. Arguments are presented that for the relevant levels of ambient illumination (1,500 – 40,000 lux), the maximum intensity for dedicated DRLs should be about 1,500 cd. The report also discusses recommended DRL light distributions, non-dedicated DRL alternatives, and the use of rear lamps with DRLs. | en_US |
dc.description.sponsorship | Michigan University, Ann Arbor, Industry Affiliation Program for Human Factors in Transportation Safety | en_US |
dc.format | charts | en_US |
dc.format.extent | 64 | en_US |
dc.format.extent | 535463 bytes | |
dc.format.mimetype | application/pdf | |
dc.language | English | en_US |
dc.publisher | University of Michigan, Ann Arbor, Transportation Research Institute | en_US |
dc.subject.other | Running Lamps | en_US |
dc.subject.other | Daytime | en_US |
dc.subject.other | Headlamps | en_US |
dc.subject.other | Brightness/ Light Intensity/ Illumination | en_US |
dc.subject.other | Glare/ Dazzle | en_US |
dc.subject.other | Optical Contrast/ Conspicuity | en_US |
dc.subject.other | Accident Preventive Measures | en_US |
dc.subject.other | Safety Measures | en_US |
dc.title | Functional requirements for daytime running lights | en_US |
dc.title.alternative | Functional requirements for DRLs | en_US |
dc.type | Technical Report | en_US |
dc.subject.hlbsecondlevel | Transportation | |
dc.subject.hlbtoplevel | Engineering | |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/55184/1/UMTRI-2003-11.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.