Maintaining traffic sign safety retroreflectivity: impacts on state and local agencies

The report includes a summary of previous studies, including those of several State agencies, to determine the impacts of the proposed new minimum maintained levels for traffic sign retroreflectivity. The various sign cost elements are identified and changes attributable to the new minimum levels of retroreflectivity are isolated. The report provides estimates of the national impact of the proposed minimum levels generated by the models previously developed using updated inputs for sign material costs and road mileage. It was assumed that the distribution of non-compliant signs has remained the same. Estimates of the costs for upgrading street name and overhead guide signs were also generated to cover the full spectrum of signs covered by the proposed minimum levels. The report concludes that there will be increases in the costs to agencies resulting from the need to use more expensive sign face materials to increase retroreflective performance, but there should be no impacts on the costs of other sign elements. Agencies may experience a reduction in service life costs because of the longer service life of the improved sign face materials.


  • English

Media Info

  • Pagination: 32p
  • Serial:
    • Issue Number: FHWA-HRT-07-042

Subject/Index Terms

Filing Info

  • Accession Number: 01386762
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI, USDOT
  • Created Date: Aug 22 2012 9:45PM