There are at least 2 advantages to running both a handlebar and a helmet light. 2 lights at different heights help with depth perception. Also the helmet light allows the biker to see around the corner before the bar light makes the corner. I too will tilt my head away when approaching peds. I'm amazed by peds in complete darkness with no lights and nothing reflective complain. They are sometimes dress as actual ninjas, totally black. Maybe i should employ some heat seeking radar.