Having made this distinction, EN-ISO 20471 of 2013 focuses on passive subjects, classifying the clothing they must use in three different groups, class 1, class 2 and class 3, always depending on how much m² of base material (yellow, orange or red) and m² of retroreflective tape they use. Given this, and knowing the m² of base material and retroreflective material required by the standard, what type of garment should I use? The answer to this question is to be found in the speed at which vehicles travel in the place where the operator is carrying out their work.
Class 1 should be used in places where the speed does not exceed 30 km/h, i.e. car parks, garages, warehouses, etc.
Class 2 is used wherever speeds are between 31 km/h and 60 km/h, which is where 75%-80% of businesses are located, e.g. in most urban areas, county roads, etc.
And class 3 is used where vehicles travel at speeds of 60 km/h and above, up to 120 km/h, i.e. conventional roads, dual carriageways and motorways.