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 French TGV La Poste was for a long time the sole very high-speed train service, transporting mail in France for La Poste at a maximum top speed of 270 km/h, between 1984 and 2015. The trainsets were either specifically adapted and built, either converted, passenger TGV Sud-Est trainsets.