Hi Visibility Clothing
I.S. EN ISO 20471:2013 & A1:2016 is an international standard for the safety requirements and test methods of high visibility clothing. It specifies requirements for “high visibility clothing which is capable of visually signalling the user’s presence”. It states that high visibility clothing is intended to provide conspicuity of the wearer in any light condition when viewed by operators of vehicles or other mechanised equipment during daylight conditions and under illumination of headlights in the dark.