Detailed text transcripts for TV channel - CNN - 20180204:12:52:00
The ntsb and mary schiavo, is the installation of positive train controls. do you know if these were on this track that could have been employed in this situation? >> victor, determining whether or not ptc was installed or is installed on this particular segment that's going to be something certainly of great interest to the ntsb. there's been a lot of talk about that in the last few months. we certainly want to ascertain the status of the ptc system here. >> what do you know about the signaling in that area, chairman? especially in the dark at 2:35 in the morning when this happened. >> christ...
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