Stat Cruc News Today

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 thats going to be something certainly of great interest to the ntsb. theres 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 i...