From: jishnu@nospam.verizon.net   
      
   On 5/17/2015 9:56 AM, Denis McMahon wrote:   
   > On Sun, 17 May 2015 09:49:15 -0400, Jishnu Mukerji wrote:   
   >>   
   >> With the complete operationalization of ACSES all these civil speed   
   >> limits will appear on the ADU in the cab, and the specific speed limit   
   >> applies to that class of train is the one that will appear. There are   
   >> five different classes of trains on the NEC which have different speed   
   >> limits that apply to them.   
   >   
   > Are we still talking about the curve where the derailment happened?   
   >   
   > Tilt doesn't change the speed at which it's safe to take a curve, tilt   
   > just makes it less uncomfortable for the passengers at higher speeds.   
   >   
   > I doubt very much that anything would have been able to take that curve   
   > at 100 mph just by enabling tilt - it's (reportedly) 2900 feet radius and   
   > 5 inches of superelevation.   
   >   
      
   I don't think anyone has suggested that tilt would make it possible to   
   take that curve at 100mph. The speed limit for Class A trains on that   
   curve is 60mph, that is 10mph faster than Class B trains.   
      
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