This European Standard was approved by CEN on 4 June 2001. The European Standard EN 13356:2001 has status of the Standard of Republic Serbia. 20 p. This standard specifies the optical performance requirements for accessories which are to be worn, attached to or carried by people and designed for non-professional use. Visibility accessories complying with this standard are intended to signal the user's presence visually when illuminated by vehicle headlight on dark roads. This standard is not applicable to garments.