Originally Posted by
randya
and that's why the EU countries mostly specify dyno lights, avoid blinkies, and have standards for the number of lumens headlights must generate at certain speeds. In the US, there are no standards and intensity and modulation frequency of different lights is all over the place.
Do you have a reference for that? I've done some quick searches to try and get a sense of what's true and what's rumor. From what I've found the rear blinkie laws in Europe are all over the map. In Germany they are disallowed, but other places they are fine. Otherwise the light laws seem similar to those in the US, except that a rear light (vs. reflector) seems to be more universally required. There also seemed to be more extensive reflector rules than in the US. i.e. in the Netherlands some sort of circular reflector on the wheel/tire.
Speedo