Speed limit shall be only in the law in my opinion, same as its done in cars and motorcycles.
However, in my opinion the peak power of things that could be considered as a 'bicycle', just shall be restricted to 1 kW.
250W of "nominal power" is also nonsense. Throttle also shall be allowed. There is no matter when someone paddle with 40km/h or riding on a throttle.
So it shall be told in the road law - you cant ride on speed lane faster than for example 30 kmh etc.
At now we have curiosal situation where ebikes with good brakes and wide tyres cant go more than 25, but gravels without brakes and with thin tyre, without braking area - can ride 40 without issues.
I know there are other categories - but they're useless. I do not want to have speed pedelec because its automatically not allowing me to use bike lanes. If i would only use roads then i would pick the car or motorcycle.
I don't mind about the registration plates for any bike, that would easily identify who don't obey speed restrictions - same as in cars or motorcycles.
I do not know how its in another countries, but in Poland the 'standard cyclists' are incredibly stupid at some part, but the e-bike community is 180 degrees different - because these people here in PL - mostly comes from motorcycle community or downhill mtb community, and these folks are riding pretty reasonable and dont speeding where people are walking.
Its a result the e-bike is a toy here that is too expensive for most so only people who really want it - have it.
In the other hand - the rental services are more targeted by e-scooters than ebikes, so the ebikes here are a niche - for slightly more rich people than average or for people who are converting bikes by themselves (and again, these ones mostly have some engineering or motorcycle experience).
In result of above - there is no accidents where ebikes are involved at all. E-scooters - yes, standard bicycles - a lot, but ebikes-no.
Sorry for OT digression
