20 Jul '13, 11am

已经是六个年了。Time passes very fast.

已经是六个年了。Time passes very fast.

There are different kinds of transport, with different degrees of amenability to the 3rd dimension. Not all movement needs to take place at the ground level. There used to be a time when this was so, but if we look around our city today, that is not true anymore. The trains run underground, cars and buses sometimes go up flyovers, and pedestrians increasingly cross from one building to the next via bridges or underpasses, without ever stepping back to street level. It is true that trains are terribly crowded at peak hours, but it's more a function of network management and economics than of space constraint. Trains do not have to run at 4-minute intervals as they do currently at peak hour. If for example, they ran at 3-minute intervals, capacity would go up 33%. More lines can and are being built. The problem of course is to find the right balance between maximising utilis...

Full article: http://www.yawningbread.org/arch_2007/yax-721.htm

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