PREDICTION OF THE SERVICE LIFE OF WARNING SIGNS

The retroreflectivity service life (RSL) model is described which predicts when a sign has reached the end of its useful life. The model is based on providing drivers with the minimum visibility distance required for safe and efficient responses to the sign message. The RSL model comprises 3 sub-models: minimum required visibility distance sub-model; minimum required retroreflectivity sub-model; and the deterioration sub-model. Each of these sub-models are described in some detail. A microcomputer program has been developed to simplify the use of the retrereflectivity service life model. It is noted that while application of the RSL model is very limited, the study has proved that the modeling sign retroreflectivity deterioration is feasible.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1586080
• Corporate Authors:

  Federal Highway Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Awadallah, F I
• Publication Date: 1988-3

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 116-122
• Serial:
  • Public Roads
  • Volume: 51
  • Issue Number: 4
  • Publisher: Federal Highway Administration
  • ISSN: 0033-3735
  • Serial URL: https://www.fhwa.dot.gov/publications/publicroads/
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Computer programs; Deterioration; Forecasting; Materials; Mathematical models; Microcomputers; Retroreflection; Service life; Traffic signs; Visibility; Warning signs
• Uncontrolled Terms: Models
• Old TRIS Terms: Retrodirective reflection; Traffic sign materials
• Subject Areas: Design; Geotechnology; Highways; Materials; Operations and Traffic Management;

Filing Info

• Accession Number: 00467935
• Record Type: Publication
• Files: TRIS, ATRI, USDOT
• Created Date: Mar 31 1988 12:00AM