On the other hand, it is important to take into account the environmental conditions that we find ourselves in. In terms of colour, jackets that comply with the regulations are yellow, orangey-red and red. We will need to ensure that these colours are not found in our working environment, for example, in autumn the foliage can reduce the visibility of a red or orangey-red jacket.
It is also important that the item of clothing contrasts with equipment and that the person could not be confused with being an item of equipment. Above all, it is vital to bear in mind that the potential movements of the person do not affect the condition of visibility provided by the jacket.