The initial 3.4-mile stretch of the Kwun Tong Line began carrying passengers, marking the debut of a subway system designed to relieve chronic overcrowding on Hong Kong's buses and ferries. Built at extraordinary speed and cost by engineers grappling with the colony's dense urban geology, the MTR would grow into a globally admired model of profitable, high-frequency public transit.
Hong Kong in the 1970s was bursting at the seams — one of the most densely populated places on Earth, with a transit network of buses, trams, and ferries straining under the weight of a booming population. Planners had studied a metro system since the 1960s, but the sheer cost of tunneling through the harbor and hillside terrain nearly killed the project entirely; Hong Kong even considered scaling back to a modest 'starter line' before recommitting to a full network.
The first trains that ran on June 25, 1979, connected Kwun Tong and Shek Kip Mei with just a handful of stations, but the system expanded rapidly through the 1980s, eventually tunneling beneath Victoria Harbour itself.
What makes the MTR remarkable in transit circles is its business model: unlike most metro systems worldwide, which rely on heavy government subsidy, the MTR Corporation has long turned a profit, partly by developing lucrative residential and commercial property above and around its stations. It became a case study cited by transit planners from London to São Paulo trying to escape the subsidy trap.