The amendment to the Act which enjoins wear reflective elements in reduced visibility and outside the village on unlit roads, says quite clearly how, where and what size should be reflective elements.
"You certainly do not have to wear a reflective vest. Just good complement of retro reflective material distinctive colors (Yellow, light green, orange, etc.), which is visible to other road users. The ideal is thus provides for example a reflective strip disposed on the foot or hand (ideally at bot