Car in front was getting slower and I was right behind. I, assuming he is slowing for a speedhump (thinking about it now- it's rare that anyone slows that much for a speedhump), decide to overtake. So i'm pretty much committed to it and then the right indicator goes on and he starts to make for a driveway on the right, just before the speedhump. OK, might have been nice if the indicator had gone on a bit earlier, but it wasn't entirely unpredictable. Flicked the bars, got round the front of him OK, but it's almost exactly the same as an incident I had earlier in the year where I was taken out, so it was a bit dumb to try it again. Shoulda hung back there and waited. Silly sod. He did leave it bloody late with that indicator tho'.