Comment Re:and dog eats tail (Score 1) 393
To clarify for the purposes of the Amtrak accideng, there are no Amtrak trains that run with ATC at all.
The NEC and certain other routes have had a limited form of PTC, one called ACSES and another called ITCS, but they do not technically qualify as "true PTC" systems under the emergency order issued after the 2008 Chatsworth accident and the one issued after last week's Amtrak accident.
The Wikipedia article is incorrect. ACSES has operational on the entire NEC for several decades, but ACSES doesn't quality as a "true PTC" system and doesn't penalty brake for violating speed restrictions, unfortunately.
With all the news flying around concerning this accident online encyclopedias will not be a good source of information.