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Amtrak Crash Near 30th St Stn.
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[QUOTE]Originally posted by Geoff Mayo: [QB] [QUOTE]Originally posted by Gilbert B Norman: [qb]It is further reported that this stretch of the Corridor has not yet been equipped with ASCES, or Amtrak's system of control that qualifies as Positive Train Control.[/qb][/QUOTE]Amtrak's PTC [b]IS[/b] ACSES. However, it would seem that even if this section of track was fitted with the original ACSES (ie not the PTC "upgrade") then it would unlikely have had much effect as the system is too basic and not granular enough for short speed alterations. I have seen it "reported" elsewhere that PTC is like ERTMS used in Europe, and ERTMS has barely started roll-out. Well, in fact the first ERTMS line was over 10 years ago and there are 90,000km of track fitted now - worldwide, not just Europe. The US' PTC will "feature" a few different versions of PTC, all incompatible with each other - but at least there are some groupings like BNSF and UP working together on their version of a "common" standard. Opponents of ERTMS who support PTC try to point out that ERTMS could not possibly have been implemented in the US due to the number of different standards and railroads. They tend to go silent when asked how countries as diverse as Mexico, Saudi Arabia, Australia, France and South Korea (to list just a handful) can all achieve it... [/QB][/QUOTE]
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