Originally Posted by SClaraPokeman

The assumption behind using a camera (recording a bicycle ride or while driving) is that in event of an accident the film will provide evidence that will put blame on the "other" party. But what if what's recorded doesn't exonerate the person doing the recording--for instance, a bicyclist who goes through a light on a red and hits a pedestrian? Instead of a possible "his word against her word" you have a situation where you can have evidence that proves you were at fault. Are you legally required to turn over evidence that can incriminate you?