Research of In-Service Regulatory Signs Sheeting, Retro-Reflectivity, and Deterioration Characteristics

Regulatory signs are the most important facility for conveying traffic laws or regulations to road users. At nighttime, the effect of regulatory signs is utterly dependent on retro-reflective sheeting. In the natural environment and real traffic conditions, retro-reflective sheeting is affected by diversified components and retro-reflectivity will continuously deteriorate. When retro-reflectivity decreases to a certain level, the visibility of traffic signs will fail to achieve the needs of road users. To obtain the deterioration characteristics of Regulatory signs, researchers took continuous observation of 120 guide signs put in the test square over twelve years (1998-2010). According to the data, the researchers got the deterioration curve of the Coefficient of Retro-reflection, furthermore, the researchers built a mathematical model containing a linear mathematic model, a second-order polynomial model and a cubic curve regression model. This research shows that normally the second-order polynomial model and cubic curve regression model have better fitting than the contained linear mathematic model. The mathematical model can be considered the basis of researching the guide signs sheeting deterioration characteristic and Life cycle. This research will give reference to Chinese traffic sign maintenance.

• Record URL:
  • https://doi.org/10.1061/9780784412442.111
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784412442
• Supplemental Notes:
  • © 2012 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Jiang, Ming
  • Zhou, Rui
• Conference:
  • Twelfth COTA International Conference of Transportation Professionals
  • Location: Beijing , China
  • Date: 2012-8-3 to 2012-8-6
• Publication Date: 2012-8

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 1087-1095
• Monograph Title: CICTP 2012: Multimodal Transportation Systems—Convenient, Safe, Cost-Effective, Efficient

Subject/Index Terms

• TRT Terms: Deterioration; Mathematical models; Night visibility; Reflective signs; Regulatory signs; Retroreflectivity; Service life; Sign sheeting
• Geographic Terms: China
• Subject Areas: Highways; Maintenance and Preservation; Operations and Traffic Management; I61: Equipment and Maintenance Methods; I73: Traffic Control;

Filing Info

• Accession Number: 01501016
• Record Type: Publication
• ISBN: 9780784412442
• Files: TRIS, ASCE
• Created Date: Dec 10 2013 8:10AM