I've been traveling in northern Scandinavia for the past few months.

One thing that sticks out is that Norway has very low speed limits. They also have strict enforcement compared to the UK and super high fines.

In the northern part of the country you really need it because the weather varies a lot and the highways are basically mountain passes. At the moment around where I am close to Lofoten the roads are pretty much ice rinks as it's been constant rain and wind for a few days whilst the lower surface of the road was compacted snow/ice.

Plus there are animals.

But even in town 30, 40, 50 limits are common in places that would be way higher in the UK.