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Old Posted Sep 21, 2020, 9:37 PM
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ardecila ardecila is offline
TL;DR
 
Join Date: Jun 2006
Location: the city o'wind
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Quote:
Originally Posted by electricron View Post
A sentence contained within the news report,
"The state’s long-term plans for rail service include passenger trains capable of going 110 mph between Raleigh and Richmond on the S-line."

Again, we see 110 mph maximum speeds being reported as high speed rail.
America's definition for HSR is lower than what most of the world defines.
The metric world defines HSR as 200 kph (125 mph) on preexisting railroad corridors, and 250 kph (150 mph) on brand new alignments.
America's 110 mph for HSR is lacking.
I'm guessing there are high regulatory requirements that kick in between Class 6 (110mph) and Class 7 (125mph) which is why we have seen few states choose this route. I don't know all the particulars of FRA regulations but it looks like Class 7 requires more frequent inspections and a much more complicated system at grade crossings.

Given how badly grade crossings screwed up Denver's new commuter system, this might be the reason states are hesitant to do 125mph, or part of the reason. (Granted, part of Denver's issue involved electrification, which would not be in place on the S-Line).

At least the new Charger locos are theoretically capable of regular service at 125mph, although there are no tracks on which they can go that fast.
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