Abstract
Investigations in Norway have shown that the risk for pedestrians being involved in a traffic accident during night-time is 10 times greater than during day-time. There are of course many contributing factors to the higher rate at night, but one of the main factors is undoubtedly the lack of conspicuity of pedestrians and who often wear dark clothing. Retro-reflective materials increase the visibility under dark conditions. An experience shows that reflective material both sewn on clothes and displayed in retail stores might be attractive to the consumers.