It definitely is darker in the morning, so I thought I’d compare light settings on my NiteRider Lumina 700. My NiteRider has three light settings … low, medium, and high. It seems that I can get by with just the low setting, and this is mounted on my handlebar:
This is sufficient so that cars can clearly see me, as well as me seeing the road. I see some that have similar lights on their handlebar, plus additional light on their helmet (around the same light strength). That’s a little overkill.