Just to be clear: I agree with uke that you shouldn't ride at night without a taillight. I won't ride without at least 5 Only a fool would do so.

I just don't agree with him that overtaking collisions are a high percentage of collisions between bicycles and automobiles. Most of the collisions are going to be because someone failed to yield right of way properly. The majority of those are the fault of the motorist. However, most people are worried about being hit from behind and plan accordingly. Getting hit from the side or from someone turning in front of you (left or right) is far more common and could be much better avoided by the judicious use of front lighting. Most people think that something like a Fenix L2D is more then adequate. I think that much light is just barely adequate. If you ain't givin' 'em a 3rd degree sunburn, you ain't got enough light