I've noticed the people who used to sit on my rear bumper all the way through the Summer months trying to make me go over the speed limit and the ones who had to overtake everyone no matter what are now holding me up now it gets dark earlier. There's driving to the conditions and then there's taking the frickin' pee. Darkness = -10MPH, Rain = -10MPH. So a 60MPH road is now reduced to 40MPH because of these idiots. I hate to think what would happen if it snowed, we'd probably be going backwards.
People who leave stupidly large gaps between them and the car in front in a queue. The next time I come across one I'm going to go around them and see if they wake up.
People who sit on your backside when it's quite obvious I couldn't go faster if I tried due to the line of traffic in front.
People who speed up as you over take them. Had one last week. Doing 40 in a 50. I get to a small bit of dual carriageway (literally 500 yards long maybe) and start to over take as I assume they are going to carry on doing 40. No, foot down. 50, 60, 70, 75 and they give up. I look in the mirror and the fat idiot is sat there grinning. Yeah, nice one, good job I wasn't over taking you on a single lane carriageway.
People who seem to take an age to work out what the traffic coming around a roundabout is doing. Sat behind someone today who had three very clear chances of going, but they kept hesitating.
The idiot in a red MK2 Golf last week who thought it was a perfectly safe idea to overtake a car that was already overtaking a van on a single lane carriageway with dashed markings down the middle of it just before a long blind sweeping corner.
I could go on. A48 = Complete idiot magnet, avoid it at all costs.