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 the United States, following the creation of Japan's first high-speed Shinkansen, President Lyndon B. Johnson as part of his Great Society infrastructure building initiatives asked the Congress to devise a way to increase speeds on the railroads. The congress delivered the High Speed Ground Transportation Act of 1965 which passed with overwhelming bipartisan support and helped to create regular Metroliner service between New York City, Philadelphia, and Washington, D.C.. The new service was inaugurated in 1969, with top speeds of and averaging along the route, with the travel time as little as 2 hours 30 minutes. In a 1967 competition with a GE powered Metroliner on Penn Central's mainline, the United Aircraft Corporation TurboTrain set a record of .