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
The fastest operating conventional trains are the Chinese CR400A and CR400B running on Beijing–Shanghai HSR, after China relaunched its 350 km/h class service on select services effective 21 September 2017. Since July 2011 till September 2017, in China, the maximum speed was officially , but a tolerance is accepted, and trains often reach . Before that, from August 2008 to July 2011, China Railway High-speed trains held the highest commercial operating speed record with on some lines such as the Wuhan–Guangzhou high-speed railway.
The speed of the service was reduced in 2011 due to high costs and safety concerns the top speeds in China were reduced to on 1 July 2011.