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In October 2015, Chris Murphy, a U.S. Senator from Connecticut, took on the issue of transportation. He kicked off the conversation by focusing on the commute and invited people to share their ideas for how to fix it. He even live streamed his ride, sharing in the frustration of many who find themselves stuck in crippling traffic each rush hour.

Sadly, while Senator Murphy calls for an "honest discussion," his argument included this patently false statement right out of the Infrastructure Cult's talking points memo:

Federal gas tax receipts in 1993 were $19.6 billion. By 2013, that had climbed to $29.2 billion. To this, Congress annually adds billions more. Sure, the gas tax has not been increased since 1993, but let's not pretend that is the fundamental cause of our transportation woes or — more importantly — that what we "need" is more "big projects".

Most of Senator Murphy's conversation dealt with the chronic issue of congestion. Notice I did not call congestion a problem. It is clearly not. Within our places — on our streets — congestion is an indicator of success. As Yogi Berra reportedly said: "Nobody goes there any more because it is too busy."

Indeed. The most successful places are full of congestion.

On the roads we construct to travel between places, congestion signals many things but, for me anyway, it primarily indicates America's cultural — and the engineering profession's technical — misunderstanding of the systems we have built.

Consider the hierarchical road network. It's so commonplace today that we rarely stop to question it. Small, local streets empty into collector streets. Those collectors empty into arterials. The arterials empty into major arterials which eventually end up pouring into our highway systems. Small to big; it's the way things are done.

The Watershed

A slide from our Transportation in the Next American City presentation

A slide from our Transportation in the Next American City presentation

Stop a moment to consider a watershed. There you have ditches that flow into small creeks. Those creeks flow into larger brooks and streams. In turn these flow into larger rivers and, ultimately, these systems come together to form some of the world's major waterways.

We all intuitively understand that, when we experience rain or snow melt on the edges of a watershed, a compounding effect occurs. We've become fairly competent at realizing that, by the time all this rain comes together, it very often produces a flood.

We've so grasped this concept that we've taken steps to address the problem at the source. We don't allow people to fill their wetlands. We require developers to retain their runoff on site. We build retention systems to hold back runoff and feed stormwater into the natural systems more slowly so flooding does not occur.

We take these steps and others at the source to mitigate the cumulative, negative impacts of stormwater runoff. Namely: flooding.

The Road Network

A slide from our Transportation in the Next American City presentation

A slide from our Transportation in the Next American City presentation

Instead of a river network, examine a similar system of roadways during a typical commute. Here we have rain of a different sort: the automobiles that emanate forth from the development we induce, subsidize and cheer for out on the periphery of our cities.

Why are we so shocked when this produces a flood?

WE. CREATE. THE. FLOOD.

If we were going to design a system to generate the maximum amount of congestion each day, this is exactly how it would be done. This is why all American cities — big, small and in between — experience some level of congestion during commutes. We take whatever cars we have and funnel them into the same place at the same time. We manufacture a flood.

I've written a short eBook describing the ways I would go about using price signals to make some rational choices about our transportation investments, but I'm going to simplify by sticking with the river analogy. When we want to decrease flooding in a watershed, we go to the source. We try to retain that water, to absorb it as near to where it originates as possible. We understand that this is much cheaper and more effective than building massive infrastructure systems to handle the runoff once it is sent downstream.

For automobile flooding (congestion), the only way to deal with it and still have a successful economy is to address it at the source. We need to absorb those trips locally before they become a flood. Instead of building lanes, we need to be building corner stores. We need local economic ecosystems that create jobs, opportunities and destinations for people as an alternative to those they can only get to by driving.

For nearly seven decades, our national transportation obsession has been about maximizing the amount that you can drive. Today, we need to focus on minimizing the amount you are forced to drive. If we develop a system that responds to congestion by creating local options, we will not only waste less money on transportation projects that accomplish little, but we will be strengthening the finances of our cities.

We can spend way less and get way more in return. That's the essence of a Strong Towns approach.

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(Top image source: Johnny Sanphillippo)


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