Development of a device to evaluate the retro-reflective performance of pavement marking materials (FHWA-81-2) 2135

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dc.contributor.sponsorOklahoma Department of Transportation. Materials and Research Division. Office of Research & Implementation
dc.creatorNelson, Thane I.
dc.date.accessioned2018-12-05T16:30:50Z
dc.date.available2018-12-05T16:30:50Z
dc.date.issued1981-6
dc.description.abstractThe objective of this research study was to investigate possible techniques for measuring the brightness of the retro-reflective pavement markings on a highway surface. The measurements were to be made during daylight hours and from a moving vehicle. A practical field device, or instrument, was then to be designed and developed. During the course of the project, one major change was made in the objective. This was to measure the contrast of the stripe to its background rather than stripe luminance only. A bench prototype of the optical system and the servo controlled tracking system has been constructed and tested in the laboratory. This report discusses the system requirements, the design approaches considered, the prototype tracking system and the proposed design of the complete device.
dc.description.peerreviewNo
dc.description.versionFinal Report July 1976-June 1981
dc.format.extent38 pages
dc.format.extent5,248,995 bytes
dc.format.mediumapplication.pdf
dc.identifier.govdocFHWA-OK-81-2
dc.identifier.otherOklahoma Department of Transportation State Planning and Research Item Number 2135
dc.identifier.urihttps://hdl.handle.net/11244/316268
dc.languageen_US
dc.relation.ispartofseriesNo
dc.relation.requiresAdobe Acrobat Reader
dc.subject.keywordsRetro-reflectivity
dc.subject.keywordsBrightness
dc.subject.keywordsPavement markings
dc.subject.keywordsContrast measurements
dc.titleDevelopment of a device to evaluate the retro-reflective performance of pavement marking materials (FHWA-81-2) 2135
dc.typeTechnical Report
dc.type.materialtext

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