I too had a night ride home from work at about 8:30 pm. SUPER! I went through the park 2/3 of the way home as usual, with no street lighting. My improvised bright headlights are great. They run off a 12 volt jump starter battery. I carry this around all the time and it weighs 8 lbs (which is the smallest jump start battery I could find). It's worth every pound of its extra carry weight due to the safety, confidence and convenience of being able to SEE at night. Plus, since my commute is short (3.5 mi), I need the extra exercise. On days when I get on the road bike sans battery / rack/ etc it seems to be a lot less effort (so I go longer on those days).