I've always driven abroad - already in 1987-88 I shared a car with my German flatmate and again in Germany the following year, so I have never really paid much attention to national differences when it came to driving habits (other than which side of the road I was meant to be driving on or which side of the car I was meant to be sitting in!)... Obviously driving in Germany was always a wee bit different, given they have speed-limitless roads, so I quickly learned to pay much more attention in my mirrors to the speed something was coming up the outside lane for overtaking purposes, but other than that I never really analysed it...
Now I'm mainly driving in Denmark, but have nipped back to Scotland two or three times for a week. I have now noticed one colossal difference between the two sets of drivers and that is undertaking on motorways. Unless traffic is more or less at a standstill, usually because of roadworks, because the roads are definitely less busy here, no one ever undertakes you here. Although I would obviously not recommend it, you could, to all intents and purposes, move from the middle lane of a motorway into the slow lane without looking. So, back in Glasgow last weekend I tested my theory that Scots were much more a breed of undertakers than Danes - my god - even between Crookfur and Glasgow centre (a less than 10km stretch) I lost count of the number of cars that shot up my left hand side (no I wasn't going under the speed limit like an annoying snail) - they were simply being chancers who could not be bothered popping out two lanes and back two. So, all in all driving in Scotland is harder and more stressful than here - you certainly need to be more alert.
It's actually interesting to look at national differences. I have many years of experience of driving in France, Italy, Germany and a bit in Spain, Switzerland and Luxembourg, but had very little experience of Scandinavia till this year. I've always found France and Italy similar to home so they have never fazed me. Nothing much stood out in Spain, Switzerland or Luxembourg either. The main German difference is that outer motorway lane when the speed limit goes altogether and the Audis and BMWs shoot past at 150kmph+ - you just stay out of that unless you've hired something much more powerful than I tend to be able to afford to own!
Over the October week, I took my car to the Netherlands for the first time. I've only ever used public transport there before. It is altogether different. It is such a small country but with a huge amount of traffic on the motorways, and once you get into the cities, bikes and trams are thrown into the mix. The roundabouts really should be taught to foreigners before they attempt them. I think more Dutch would be run over by the annual tourists if it wasn't for the sheer number of bikes that pass you like an impenetrable wall. I think I'd call it a high-concentration drive. The distances between cars is less than half what we're used to in Scotland, they drive at 130kmph (81mph) even when it is highly congested, jumping in and out smoothly in a hair-raising fashion. It almost looks like they are knitting some elaborate pattern with their cars in a fast and well-choreographed manner. It definitely isn't somewhere I would like to drive if I was overly tired or had less driving experience.
Finally, as I've mentioned before, living somewhere where there are very few potholes is nice. I feel like I can pay attention to driving rather than scanning the road surface, but the thing I miss most from home is cat's eyes. Living beyond where the Glasgow lampposts light the motorway, these wonderful little reflectors made driving clear and easy. Here, I often drive to Copenhagen, Billund or the German border at night in the dark and their absence is painful. In driving rain and mist it is significantly harder to see the boundary between lanes. They really don't know what they are missing. It is as different as driving a country lane in the dark and driving down an airport runway. Come on, Europe, order in some cat's eyes, please!