Yes, bring back the days of those old public information films! :-D Actually, to be honest, I'm not that sure on how to drive in fog. I've had it so drilled into me that you must never ever ever use fog lights unless it's absolutely necessary, that I'm terrified to even try. "Oh, no, it's not foggy enough yet," say older, wiser drivers, even when it seems to me to be so foggy that you can't see your own feet.

Agh. I hate those people who pull out in front of you, notice belatedly that they've caused you to slam on your brakes, and then indicate, as if that all makes it okay again. Although my particular bugbear - because although it's less dangerous, it's a lot more prevalent - is when you're sitting there patiently giving way to someone who disappears before they reach you. Presumably they think "there's no-one behind me, so there's no need to indicate," and don't have the intelligence to think that people ahead of them might be affected, too. This happens a lot when I'm driving, but even more often when I'm a humble pedestrian, standing in the rain.

Sorry. You've unleashed a rant here. :-)