Comment by Fogest

I know here in Ontario, Canada we do have regulations for ebikes. They are not allowed to exceed 32km/h (or ~20 mph). This seems like a somewhat reasonable limit. They also impose other requirements like minimum wheel widths, having two independent braking systems with stopping distance requirements. You can't even ride them if you got a criminal conviction that prohibits driving (such as a DUI).

Reference: http://www.mto.gov.on.ca/english/driver/electric-bicycles-fa...

I think the only problem here is that some of these things can be hard to regulate with making random enforcement stops. And people typically aren't much of a fan of random stops which is understandable, I'm not either. So I guess you'd have to happen to catch them by LIDAR, but I don't even know how accurate such a reading would be against a small bike. Not sure it would be admissible in a court.