Detailed text transcripts for TV channel - MSNBC - 20150514:10:06:00
Could put an end to accidents like those and the one in philadelphia. it's a safety system that sought h. automatically slows trains down to enforce speed limit wills and it's in place in some sections, but not the location of tuesday's derailment. ptc is a system that uses sensors on the rails and inside the engine car as well as satellites to track a train's movement. if a train is going too fast, the system warns the crew if the engineer does not slow down the train, the computer automatically activates the brakes. >> so we have patrick murphy with us, heed rendell, as well. patrick, yester...
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