In recent years, a series of studies has been conducted by the Institute for Consumer Ergonomics for the Transport and Road Research Laboratory concerned with finding effective and acceptable ways of improving the conspicuity of motorcycles in daylight. The relative effectiveness of clothing for riders, lighting, and other treatments for motorcycles was examined. Results from these studies have shown there are ways of effectively increasing motorcycle conspicuity in a wide range of daylight situations. Pairs of daytime running lamps, large dipped headlamps, or clothing displaying a large fluorescent area are all effective. Small headlamps on low-powered machines or small areas of fluorescent treatment are not effective.