your behind the times with a halogen bulb system. i use a B&M Lumotec IQ Fly led front light with standlight & a B&M lumotec led rear light. these lights are way brighter than bulb types, & get bright at walking speed. i use a hub dynamo also. these lights stay bright when stopped for about 5 minutes & charge up when riding. check out these beam pics from peter white cycles: http://www.peterwhitecycles.com/headlights.asp

compare the led systems to halogen, not even close...