Yesterday I had automatic emergency braking kick in just as I was about to cross a set of railroad tracks. I was going downhill toward the tracks, and I suspect the radar got a strong return off the steel tracks and misinterpreted it as a car ahead. There were no actual cars as far as the eye (or camera) could see. One confounding factor is that I had TACC engaged at the time, however it's my understanding that automatic emergency braking is independent of TACC so presumably the radar is active regardless. I didn't use the in-car bug reporting because my passengers were already slightly freaked out and I didn't want to compound it. I may go try to reproduce the problem later. Anybody else encountered this kind of problem with tracks or other large pieces of metal embedded in the road?