Originally Posted by
Werkin
Here's what DiNotte Lighting USA had to say about this and a related lumen question:
...it takes a really bright white light to be visible during the day time...lumen output is a reference when talking about the same color -and when talking about using it to see the amber lights put out less lumens than white (or red), but in traffic an amber light is an appropriate light for a front light, and the lesser lumen amber light is more visible than a similar lumen white light.
DiNotte's "best" amber recommendation for daylight only, model 800A -
http://store.dinottelighting.com/amb...ight-p126.aspx
Their day + night recommendation, 1200L or XML-3.
Good point on color -- it's the difference between being visible and being conspicuous. The brighter white light is easy to see if you're looking for it, but amber grabs more attention if you aren't looking for it.