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).
Express trains in India
Superfast Express trains are express trains which make still fewer stops, as compared to ordinary express trains, achieving still shorter journey times. Tickets cost more than ordinary express trains as they have "superfast surcharge" added to them. Trains with an average speed, excluding halts, equaling or exceeding ( until the early 1990s) on both up and down journeys fall into the this category and are numbered with a prefix of 12 or 22 or 20 (previously 2). Including halts the average speed often is below 55 km/h. In some cases, trains run superfast where there is an overlapping express service available, and run regular express trains where there is no supplementary express service.