Originally Posted by
Michel Gagnon
Could be. But another reason is the size of your "light source". For a light source to be noticed, its size is even more important than its brightness. And for a given brightness, the larger the source, the more it will attract attention. Unfortunately, most bike lights sold in North America use very tiny light sources. When seen from far away, two or three light heads look like a bigger light source.
This is absolutely correct and is what I've been saying for years on this forum. It's also why I use a front amber flasher because I know the limitations of the size of bicycle lights and the need to attract attention to me, and that's where the flasher comes in.