High Speed 2 Line: Tunnels
(asked on 17th September 2026) - View Source
Question to the Department for Transport:
To ask His Majesty's Government what is the maximum allowable operating speed in the HS2 Phase 1 tunnels.
This question was answered on 8th October 2026
HS2 will now operate to a maximum permissible overall line speed of 320 km/h, this includes all tunnels on the route.