by Angie Schmitt, Streets Blog
Today on the Streetsblog Network, David Levinson at the Transportationist presents some interesting explanations about why so much American road building is a poor use of funds:
In this image, the black lines represent roads and the blue dotted line represents a traveler. At some point, adding additional roads is subject to diminishing returns, saving people less time per dollar invested. Image: David Levinson
We are not building much new transportation in the US not just because the costs are too high, but because the benefits are too low.
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https://streetsblog.net/2013/01/10/the-diminishing-returns-of-highway-building/