Left: in 1994
Right: after 2007
Cost per mile: £64–91 million
(around 7x cheaper than London's Jubilee & Northern line expansions & 14x cheaper than Toronto's Ontario line)
Left: in 1994
Right: after 2007
Cost per mile: £64–91 million
(around 7x cheaper than London's Jubilee & Northern line expansions & 14x cheaper than Toronto's Ontario line)