garyfloyd;

Thanks. Most bicycle headlights sold in the USA use flashlight type reflectors and electronics unfortunately. The higher power ones are off road oriented rather than intended for road use and bicycle lighting requirements from the government are minimal.

The German headlight specs per some info I have seen from Germans badly need updating to reflect state of the art LED lighting capabilities, particularly as regards dynamo lights. Items such as minimum acceptable light level are still based on incandescent bulb outputs that a glow worm can provide. Per info from a foreign poster who has seen them the German specs are written such as to be very hard to understand even for a German speaker and apparently no full text English translation is available.

The ANSI specs may not be ideal but they at least address one area that needed it, Lumens output. Ansi requires it be a measured "out the front" value done with an integrating sphere after about 3 minutes of warm-up. It should provide listed outputs a lot closer to reality.