I don't know what is the problem with speed limits in the US. Here in Switzerland (and throughout Europe), most limits are mostly sane. We have 120 km/h (75 mp

I don't know what is the problem with speed limits in the US. Here in Switzerland (and throughout Europe), most limits are mostly sane. We have 120 km/h (75 mph) global highway limit, which you mostly don't want to ignore (especially in the mountains, which is like almost anywhere). And on the smaller roads, if it suddenly says e.g. 80 km/h, you better reduce your speed, otherwise you'll risk not fitting into the turn.