United States Department of Transportation
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OCLC Number:779541636
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NTL Classification:NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control DevicesNTL-SAFETY AND SECURITY-Highway Safety
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Abstract:This final report contains two separate reports which describe the retroreflectivity
levels of various traffic signs and pavement markings on the lowa primary road
system. The data was collected in the falll/winter of 1994 and given to the
Federal Highway Administration in March of 1995. This information is currently
being combined with similar information from other jurisdictions across the
country for the purpose of determining the impact of mandated minimum
retroreflectivity levels.
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