The challenge of public transport is to get the timing exactly right. Ideally, you'd build transit where nobody currently lives but will move to immediately af

The challenge of public transport is to get the timing exactly right. Ideally, you'd build transit where nobody currently lives but will move to immediately after construction ends. Build it too late and it's really hard to make the necessary infrastructure modifications. Build it too early and the line won't generate enough usage, political opposition will grow and other modes of transportation will replace it.