InterCityAPT sign,train formation,for high speed train, WCML

The Advanced Passenger Train (APT) was a tilting high speed train developed by British Rail during the 1970s and early 1980s, for use on the West Coast Main Line (WCML). The WCML contained many curves, and the APT pioneered the concept of active tilting to address these, a feature that has since been copied on designs around the world. The experimental APT-E achieved a new British railway speed record on 10 August 1975 when it reached 152.3 miles per hour (245.1 km/h), only to be bested by the service prototype APT-P at 162.2 miles per hour (261.0 km/h) in December 1979, a record that stood for 23 years.