Page:Derailment of Amtrak Passenger Train 188 Philadelphia, Pennsylvania May 12, 2015.djvu/60

NTSB In this case, assuming that the Amtrak 188 engineer knew about the existence of speed protection on curves on this route, query whether he also knew that this particular curve did not have speed protection; and if not, query whether the presence of speed protection on some of the curves had the unintended consequence of making him less vigilant about his speed on any curves.

This accident demonstrated that PTC is very important and can save lives, but it must be introduced carefully in order to avoid unintended consequences.

Member Weener joined in this statement. 50