In the first of a new series of articles headed ‘Moving the Masses’, Andrea Connor and Donald McNeill write in The Conversation (4.6.18) that, as cities expand upwards, downwards and outwards, and with urban density also increasing, moving people efficiently around the city, often using ageing infrastructure, is a challenge for planners and government.
‘Cities worldwide face the problems and possibilities of “volume”: the stacking and moving of people and things within booming central business districts. We see this especially around mass public transport hubs.
‘As cities grow, they also become more vertical. They are expanding underground through rail corridors and above ground into the tall buildings that shape city skylines. Cities are deep as well as wide. The urban geographer Stephen Graham describes cities as both “vertically stacked” and “vertically sprawled”, laced together by vertical and horizontal transport systems.
‘People flow in large cities is not only about how people move horizontally on rail and road networks into and out of city centres. It also includes vertical transport systems. These are the elevators, escalators and moving sidewalks that commuters use every day to get from the underground to the surface street level.
‘Major transport hubs are where many vertical and horizontal transport systems converge. It’s here that people flows are most dense.
‘But many large cities face the twin challenges of ageing infrastructure and increased volumes of people flowing through transport hubs. Problems of congestion, overcrowding, delays and even lockouts are becoming more common. Governments are increasingly looking for ways to squeeze more capacity out of existing infrastructure networks.’
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