Originally Posted by
acroy
...One recommendation: I have found that using 2 light heads on the bars, regardless of intensity, garners more respect from drivers. Maybe it give them a reference point on how fast I'm moving, or they think I'm a motorcycle, or something. whatever, no issues with not being seen & treated with respect.
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.