questionText: To ask the Secretary of State for Transport, what estimate she has made of (a) the minimum, (b) the expected and (c) the maximum savings arising from reducing the design speed of HS2 from 360 km/h to 320 km/h; how those savings have been calculated; and what proportion of those savings are expected to arise from (i) infrastructure changes, (ii) signalling changes and (iii) testing requirements.
answerText: As recently set out in the Secretary of State’s statement to the House, she accepted the recommendation to bring HS2 into line with proven leading European high-speed operating standards, including operating HS2 at up to 320 kilometres per hour (kph),supp...
heading: High Speed 2 Line