# The Railways (Interoperability) (High-Speed) Regulations 2002, Paragraph 2: Rolling Stock


The high-speed advanced-technology trains shall be designed in such a way as to guarantee safe, uninterrupted travel:
at a speed of at least 250 km/h on the lines specially built for high-speed, while enabling speeds of over 300 km/h to be reached in appropriate circumstances;
at a speed of the order of 200 km/h on existing lines which have been or are to be specially upgraded;
at the highest possible speed on other lines.

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Source: https://www.legislation.gov.uk/uksi/2002/1166/schedule/1/paragraph/2 (the official version)
Page: https://openlegislation.uk/railways-interoperability-high-speed-regulations-2002/schedule-1/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.