High Quality Content by WIKIPEDIA articles! Bicycle lighting improves the visibility of the bicycle rider to others in dark conditions, and may help the rider to see by illuminating the way forward. Both reflectors and active lights are used to make the rider more visible. Many jurisdictions require one or more types of light to be fitted to bikes ridden at night. White light in the front, red lights in the back, and orange reflectors on the side is the most common setup. Many types of light sources are used for bicycle lights.