You would have never thought it possible, would you? Some 40 percent of German night cyclists are on/off the road these days without functioning bicycle lights.
And I’m one of them. And I’m not even German. And I’ll tell you why: That little generator thingy that sticks out and is supposed to turn on the back wheel or something doesn’t make proper contact anymore. Hasn’t for a few years now (yes, of course I’ve tried to click it down like you’re supposed to).
So what else am I supposed to do, like get it fixed or something?
Dabei riskieren die Radfahrer nicht nur ihre Sicherheit, sondern auch Bußgelder, wie der Verkehrsclub (ADAC – an automobile club, get it?) warnte.

ADAC sponsored that study. ADAC, where all things auto = good, all things cyclist = evil.
Since you ask – don’t bother to fix your tire-rub-noise-drag generator – they are crap. A front hub generator is reliable, practically maintenance free, and a lot easier to push.