DETERIORATION OF RETROREFLECTIVE PROPERTIES OF SIGNS AND PYLONS IN USE FOR ROAD CONSTRUCTION SITES

ACHTERUITGANG VAN DE RETROREFLEKTERENDE EIGENSCHAPPEN VAN BORDEN EN PILONEN BIJ GEBRUIK VOOR WERK IN UITVOERING

The durability of the retroreflecting materials high intensity grade (hig) and engineer grade (eg) made by 3M, on signs in use at road construction sites, has been tested through periodical measurements of the coefficients of luminance over a period of use of two years. Both materials appear to age at the same rate. After the measurement period, in which the signs have been used 100-130 times, the coefficient of luminance of hig is still twice that of eg. For both materials, the coefficient of luminance is halved after the signs have been used about 100 times. However, from visual inspection it appears that the color filter material of the hig signs comes off at the edges, which is not the case for eg signs. In addition, some pylons with retroreflecting bands (made by 3M, type: Scotchlite Brand Reflective Transfer Film 8710) have been studied over a period of 1 year in which the pylons were used some 75 times. In this period the coefficient of luminance was halved. (Author/TRRL)

• Corporate Authors:

  Instituut voor Zintuigfysiologie, TNO

  Kampweg 5
  Soesterberg,   Netherlands 
• Authors:
  • Alferdinck, J
• Publication Date: 1984

Language

• Dutch

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 13 p.

Subject/Index Terms

• TRT Terms: Aging (Materials); Building materials; Coefficient of friction; Construction sites; Deterioration; Durability; Luminance; Measurement; Reflectorized materials; Retroreflectors; Traffic signs; Work zone traffic control
• ITRD Terms: 5292: Ageing; 3628: Construction site; 5910: Durability; 525: Luminance; 4555: Material (constr); 6136: Measurement; 4523: Reflectorized material; 553: Traffic sign
• Subject Areas: Geotechnology; Highways; Materials; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00387196
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• Report/Paper Numbers: 1984 C-2 Monograph
• Files: ITRD, TRIS
• Created Date: Aug 30 1984 12:00AM