Stop in for a cup of coffee

Did High Speed Rail update that support system technology to fit the newer rail usage?
Long ago ATSF&RY had a massive derailment in the old homeland. Seems one of the engineers missed the internal memo about the maintenance department doing their railroad tie replacement procedure on the tracks. Normally according to my engineer friends that particular curve was fit for 75 mph. With every third tie out for replacement, not so much. 30 mph tops. Scattered freight cars allover the desert.