I'm not familiar with EU laws on this but I highly doubt it. You don't define speed limits assuming a capable driver in an M3, you define them for a questionable driver in a Renault Clio.

> I think in most EU countries you lose your license if you go 30 kmph over the speed limit

It's also a significant penalty in the US, this has no impact on the reality of the speeds that exist in reality, nor the safety.

It really depends. In Sweden speed limits are low and nobody respect them. In France they are higher and slightly more respected. In the mountains /hills they are actually way too high and nearly unreachable. Most roads are technically still limited to 80/90km/h but doing more than 70 requires some serious sport driving style.

In Poland the speed limits are certainly more like "minimum required" signs and only very recently a law was introduced that you lose your licence for going 2x the speed limit....but only in towns. Outside of them you can be going as fast as you like and you can't get a ticket higher than 1000PLN(€250). I think at least bribes are either less common now or completely gone, I haven't heard of anyone successfully bribing their way out of a ticket for years now but my dad used to say that he would always get out of them by leaving a 50pln note in the documents.

But yes, in my experience if you happen to be driving at the speed limit(or god forbid - below!) You will have people driving 50cm behind you and overtaking dangerously while beeping.