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USA Will Invest in High-Speed Train to Fight Climate Change
(www.raillynews.com)
This is a most excellent place for technology news and articles.
300-350km/h actually. Although most places indeed average 200-250 on high speed lines, for example in Germany because those services often share infrastructure with slower trains. In France and Spain, however, infrastructure is often exclusively high speed which allows much higher sustained speeds around the 300km/h mark.