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Congress directed the U.S. Department of Transportation to establish "a standard for a minimum level of retroreflectivity that must be maintained for pavement markings and signs which apply to all roads open to public travel." The National Cooperative Highway Research Program (NCHRP) awarded the Optical Technology Division of the National Institute of Standards and Technology (NIST) a contract to develop a "National Calibration Facility for Retroreflective Traffic Control Materials."
NIST in turn contracted with DSM to design and build a large, high-precision goniometer mechanism that will be the central system of this new National Calibration Facility. The goniometer provides closed loop control of six independent degrees of freedom and travels over 100 feet on precision rail assemblies. The system was successfully installed in the summer of 2003.
This project was highlighted in the Spring 2004 Edition of PXI Technologies Review. Download a PDF copy of the article.
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