I watched quite the opposite problem the other day. Uber self-driving car pulled up to a red light on a busy intersection, in the left turn lane. The light turned green. I could tell that the car was in self-driving mode because it didn't step into the intersection like humans would do - not even slightly. The opposing traffic never let up enough to make a left turn, so the car stayed put, even through the yellow. Poor thing skipped a complete green light cycle. I think I heard a horn from some of the drivers backed up behind it.

Self-driving cars might be a little too polite.