How fast do high speed trains go?
Punktförmige Zugbeeinflussung
After acknowledging the warning signal the train has to stay below the braking curve (German "Bremskurve") - fast trains may travel up to 165 km/h and they must reduce the speed to below 85 km/h after 23 seconds. Note that the operation of high speed trains beyond 165 km/h is not based on visual wayside signals or PZB inductors (using LZB or European Train Control System cab-signalling instead in Germany).
High-speed rail
In 2008, high-speed trains began running at a top speed of on the Beijing–Tianjin Intercity Railway, which opened during the 2008 Summer Olympics in Beijing. 
The following year, trains on the newly opened Wuhan–Guangzhou High-Speed Railway set a world record for average speed over an entire trip, at over . In July 2011, however, top train speeds were lowered to . The 350 km/h service resumed on the Beijing–Shanghai High-Speed Railway on 21 September 2017.