loading spinner

IN-20471:2003 Former en 471 Clothing, high visibility

The standard IN 20471 specifies the features that must have the garment that has as objective to indicate visually the presence of the user, to detect it and see it so well in dangerous conditions, in all light conditions, day or night, the light of the headlights.

There are 3 kinds of clothing-signaling. Each class must have some minimal surfaces, materials that facilitate the visibility, in accordance with the table below.

The clothing must be constituted by the surfaces required of basic matter and fluorescent matter retroreflectante. Alternatively, it may be constituted by the surface of matter with both features combined.

Each class shall have a minimum area of subjects that constitute the garment, in accordance with the table below.

class 3

class 2

class 1

Basic fluorescent




Matter retroreflectante




Matter of combined


  • Class 3 The class 3 defines the level of visibility higher. Example: garment of long sleeves, parkas, sets jacket/pants.

  • Class 2 The class 2 defines an intermediate level of visibility: Example: vests, coats.

  • Class 1 class 1 defines the level of visibility lower. Example: shoulder straps.

  • Class of surface of the basic material fluorescent (0 to 3) Indicates the class of the visible matter of the retroreflectante and fluorescent.

  • Class of matter retroreflectante (0 to 2) Indicates the class of the field retroreflectante in function of its coefficient of retroflexion.