The latest generation of B&M Senso headlights, made for dyno input, have two beams. During the day the light is focused up at a level approximate to driver's eyes, at night it switches to a beam directed at the pavement ahead. The light has a photo cell which automatically switches between the two beams depending upon darkness. I don't know if I'm alive because of the light, but I feel better having them and they are very visible in the daylight.

Marc