Drivers tend to steer towards lights. Sure seems that way for drunk and tired drivers who hit lighted night-time cyclists on otherwise empty roads.

Having ridden a motorcycle forever, I came to the conclusion that a single headlight does not give an oncoming driver enough reference to judge how far an object is from them as there is not enough context. Would be nice to have shifter/two handlebar mounted lights, or some sort of halo lighting system that light up the ground around the bicycle. Remember those neon lights under cars in the 90's?

Those reflective Schwalbe tires are great idea. I had a Halo helmet band that snugly fit around my mc helmet and would light up like crazy when hit with light. I may try to get one to work on my bike helmet.