Quote:
Originally Posted by SoCalKid
Why is St. Louis still only traveling at 90mph instead of 110mph? I thought they implemented PTC already? Also, anyone know what total travel times will be once all the 110mph upgrades are done?
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The short answer is that they screwed up and realized too late that the PTC system they were using would be insufficient for 110 mph. There was a talk a few months ago by High Speed Rail Alliance discussing more in depth about this problem, which I've included below. The timestamp is at 28:38
• Video Link
https://youtu.be/YA0VJz_S18w?t=1718