Coming up to an intersection - or any obstruction or "happening" in the road - you want to take the lane if at all possible. Drivers are too busy concentrating on what's happening up ahead to check their sides and you go invisible. That can't happen if you're right in front of them with a big fat annoying red blinky. Feels more unsafe, I know, but it's the only place you know you'll get noticed.
That said - I ride in heavy traffic maybe 10 % of my commute, and have close calls with drivers maybe once a year. I'm getting better and better at seeing them coming, like the lady this morning who came roaring up from my left, ignored the yield sign, the pedestrian crossing and the fact that she was on my yield side and tore off into traffic. I just had a feeling that this one wasn't going to stop, so I just slowed down and let her rip.
My best riding in traffic rule is quite simply - assume that all cars WILL brake ahead of you, and WILL turn in front of you without signalling at any intersection. They do so often enough that assuming it can save you skin a number of times.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett