Just go all out with one of these:
http://www.drillspot.com/products/45...arricade_Light
http://www.drillspot.com/products/45...arricade_Light

Seen one guy with the below mounted, can't miss seeing him.
http://www.drillspot.com/products/79...Portable_Light

Seriously, a reflective safety vest, good lighting, and reflective tape/pants and wrists velcro reflectors/wheel reflectors is as good as it gets if you ride at night a lot. Cars will see the reflective vest first and at distance.