in many countries speed limits are quite clear cut

through "clear cut" here sometimes still involve an assessment of danger which fundamentally isn't 100% objective

and e.g. in germany you are only allowed to "drive as fast as it's save" even if the speed limit is higher (and that is a common occurrence, e.g. resident areas tend to be 30km/h zones but you have to slow down at nearly every crossing because anything else wouldn't be save and if you do an accident at a crossing driving 30km/h in such a zone you are very likely very much screwed (depending on damage done).

So I guess, yes speed limits in a certain way, too.

Thanks for the reply. Just a little spelling mistake, it’s “safe.” Besides that you write English better than me (a native) :P

How so?

I would have thought that is a good example of a law placing an upper limit on risk in a very black and white way.

Maybe exemptions for passing on single lane roads might be a net reduction of risk but I can’t think of any other grey areas.