Evaluation of Guardrail Embedded Lighting System in Trinidad, Colorado

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dc.contributorVirginia Tech Transportation Instituteen
dc.contributor.authorTerry, Travis N.en
dc.contributor.authorGibbons, Ronald B.en
dc.date.accessed2015-06-30en
dc.date.accessioned2015-07-31T20:05:10Zen
dc.date.available2015-07-31T20:05:10Zen
dc.date.issued2014-02en
dc.description.abstractThis report provides information on the design considerations of the embedded highway lighting design on Interstate-25 in Trinidad, Colorado, in terms of visibility. The information is based on visibility characterizations of small targets using luminance, illuminance, and contrast calculations as well as participant input on the detectability of small targets. Experimental conditions included two different aim angles of the lighting design (forward and cross) as well as two small target colors (red and blue). When compared to the small target detection distances produced by conventional overhead lighting systems in previous studies, the research determined that the small target visibility distances of the embedded lighting design to be shorter by approximately 50%. Adjustments to the spacing, aim, and breadth of the lighting design are recommended for future research considerations. Implementation The results of this research indicate the lighting design is an alternative; however, additional considerations to the beam angle, beam width, beam height, and spacing may improve the implementation of the system.en
dc.description.sponsorshipColorado. Department of Transportationen
dc.format.extent59 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationTerry, T., & Ronald, B. G. (2014). Evaluation of guardrail embedded lighting system in trinidad, colorado. (FHWA-OP-03-181). Denver, CO: Colorado. Department of Transportation. Research Branch. Retrieved from http://ntl.bts.gov/lib/51000/51500/51517/2013-17.pdf.en
dc.identifier.govdocCDOT-2013-17en
dc.identifier.urihttp://hdl.handle.net/10919/55069en
dc.identifier.urlhttp://ntl.bts.gov/lib/51000/51500/51517/2013-17.pdfen
dc.language.isoenen
dc.publisherColorado. Department of Transportation. Research Branchen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectGuardrailsen
dc.subjectLightingen
dc.subjectEvaluationen
dc.subjectVisibilityen
dc.subjectStreet lightingen
dc.subjectLight emitting diodesen
dc.subjectLuminanceen
dc.subjectOverpassesen
dc.titleEvaluation of Guardrail Embedded Lighting System in Trinidad, Coloradoen
dc.typeGovernment documenten
dc.type.dcmitypeTexten

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