EN ISO 20471: 2013

EN ISO 20471: 2013

High visibility clothing

This standard makes it possible to assess the level of performance with regard to the colour and the retro-reflection as well as the minimum surfaces and positioning of materials in the protective clothing for increased visibility.

Three classes of clothes are defined on the basis of three different minimum surfaces of retro-reflective, fluorescent materials and/or in
combination with the performances of the materials. Each of these classes will provide a different level of visibility, class 3 being the one that provides the highest level of visibility in the majority of situations in urban and rural settings, by day as well as by night.
Classe 1: Degree of minimum protection:  0.14m2 fluorescent material/ 0.10m2 retro-reflective material
Classe 2: Intermediate degree of protection (Sleeveless vests, tabards, bibs and pants with suspenders):  0.50m2 fluorescent material/             0.13m2 retro-reflective material
Classe 3: The highest level of protection(Coats and jackets with sleeves, overalls, two-piece costumes): 0.80m2 fluorescent material /
    0.20m2 retro-reflective material

The retro-reflective materials must still shine after:

• Rain • Variations of temperature • Abrasion   
• Cold bending •  Bending • Washing
• Dry cleaning (when applicable)

The fluorescent materials must still shine after:
• Exposure to UV light
• Dimensional variation (also concerns contrasting fabrics)
• Resistance to water vapour (this also concerns contrasting fabrics but only when the clothing item is not a vest)
• Colour fastness (also concerns contrasting fabrics)
• Mechanical properties (also concerns contrasting fabrics)