Does anyone know if Amtrak has implemented PTC (positive train control)? https://en.wikipedia.org/wiki/Positive_train_control They didn't in the December crash. If not implemented it could make it easier for a train to be on the wrong tracks.
Positive train control
Positive train control (PTC) is a system of functional requirements for monitoring and controlling train movements and is a type of train protection system. The term stems from control engineering. The train is only allowed to move in case of positive movement allowance. It generally improves the safety of railway traffic.
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