The WCML contained many curves, and the APT pioneered the concept of active tilting to address these, a feature that has since appeared on designs around the world. British railway speed record on 10 August 1975 when it reached 152. December 1979, a record that stood for 23 years. Development of the service prototypes dragged on, and by the late 1970s the design had been under construction for a decade and the trains advanced reading power pdf still not ready for service.
The trains were withdrawn from service again by the end of the month, to the great amusement of the press. The problems were eventually solved and the trains quietly reintroduced in 1984. APT’s tilt and performance, had gone through development and testing at a rapid rate and was now forming the backbone of BR’s passenger service. All support for the APT project had collapsed as anyone in authority distanced themselves from what was widely derided as a failure, while the HST found widespread support. In spite of the APT’s troubled history, the design was highly influential and directly inspired other successful trains. Its tilting system was originally licensed from the APT. The period after nationalisation was marked with rapidly falling ridership levels.