[tikkabhuna]

As far as I'm aware, they're national speed limits because they don't have the resource to work out the limit, or police them. I learnt on country roads and my instructor was very clear that although I could go at 60mph, I should drive to the conditions of the road.

[Balero]

Growing up driving in country roads in the UK you learn some tricks (dumb tricks you shouldn't do). One example is at night time you can take corners more quickly by driving on the wrong side of the road. If you can't see another cars headlights, then there are none coming.

The thought of doing this now scares me and I don't do this and suggest that no one else does either. But I know many people still drive like this.