CNN CNN Tonight May 14, 2015 02:12:00
Breaking system which could have perhaps prevented this crash and it was due to be put on to the equipment in the next few weeks, unfortunately, it wasnt. but, that implementation of positive train control has begun to take place on amtrak equipment. >> secretary luahood, these are live pictures. but i would like the go kboenow, as the former transportation secretary and advisor, what -- >> i like probably all of your viewers this evening and the people that -- the families that are suffering fr...
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