Ya know, I've never noticed those, and had to go back and look at that series of pics....you're right, and my wife even knows what you're talking about and says yes they do have it...more a warning, a series of blaring beeps, then a siren....dang if I've ever heard it though. I guess I'll just have to pay more attention next time I go. Also, I'm looking for a picture opportunity....does anyone know if you can get a clear shot of the trains as they come underneath the bridge and through the fog?