I typically don't use much light when on tour. A small blinkie that runs on easily found AAA batteries suffices. For the front I have worn my camp headlamp as a front light. Recently I haven't been taking the latter and have used a tiny 0.2 ounce zipper pull light as my only in camp light. Since that is not suitable for use while riding I did without a front light. It was a bit hard to see whether there was a shoulder, but I could follow the white line even in the desert. On nearly empty roads where traffic is light, I can see cars coming from a mile off, and ones approaching from behind can see me from a similar distance, I find that satisfactory. I don't think that would work very well in more urban areas where there is a lot of competing light, but I don't tend to ride on those at night when on tour. On very dark lightly traveled roads it works OK for me.