Guidelines for Selecting Sign Sheeting to Meet Minimum Retroreflectivity Levels (Poster)

Generally, sheeting types II or higher meet the minimum retroreflectivity requirements for warning signs in dark environments and areas where there is roadway lighting. Type IV or higher is required for environments with high background complexity and no roadway lighting. Current practice shows that: generally, higher numbered sheeting types are used for warning signs compared to regulatory signs; all but two agencies use Type III or higher as a minimum for all categories of warning signs; higher sheeting types are used for WC signs than for WA and WB signs, and; type IV is the most common sheeting used as a minimum for warning signs followed by types XI and IX. For the covering abstract of this conference see ITRD record number 201310RT334E.


  • English

Media Info

  • Pagination: 1 p.
  • Monograph Title: 2013 Conference and Exhibition of the Transportation Association of Canada - Transportation: Better - Faster - Safer

Subject/Index Terms

Filing Info

  • Accession Number: 01517994
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD, TAC
  • Created Date: Mar 11 2014 10:57AM