Not sure if this is the right category... In cab video from last years head on collision near Kismet (Fresno) California. You can see the signal change at the very last minute to red over red as it approaches the oncoming train. YOu can also see one of the other trains crew members bail out, just before the collision. Amazing no one was killed. [video=youtube;pTeDAst3KA0]http://www.youtube.com/watch?v=pTeDAst3KA0[/video] According to a railroader on another site, who has time to view this clip stated the following, for those of us, like myself, who don't quite know all the intricacies of signal lights.. ..."At the start of the video, the advance signal you see shows yellow over yellow, indicating that the camera train will take the siding at the next signal. As he approaches the siding, the signal shows red over green, meaning he's lined into the siding and lined out at the other end. At the last second, the opposing train overruns the fouling point (where the two trains can no longer clear each other) and the signal drops to red over red. Had the camera train been further back when the other one overran their red signal, he still wouldn't have known unless he could see his signal change. The opposing train would have run through the switch".