They'd have a very hard time backing that up in court against a good lawyer, as you can certainly see a Knog Frog from a distance of 500 feet in clear conditions.
The cop's definition of "sufficient" is likely to pull some weight with a judge, but without a governing sanctioning body like the SAE it's no where near as measurable as automotive lighting.
Of course, it's my opinion that you have to be doing something else illegal or suspicious for them to pull that on you anyway(like biking drunk).
As much as I wish cops would start pulling people over for blue headlights, they only use that as a tool to bring someone in for other reasons, and same goes for bikes.
Last edited by cc700; 06-24-10 at 06:46 PM.