High Speed 2

High Speed 2 (HS2) is the second purpose-built high-speed railway system in the United Kingdom. The first is the 108-kilometre (67 mi) High Speed 1 (HS1), which connects London to the Channel Tunnel and was opened in the mid-2000s. The 176-kilometre (109 mi) first phase is under construction. With a "Y"-shaped network of track and a design speed of 400 km/h (250 mph), the new railway will link London, Birmingham, Manchester and Leeds.