Steven Polzin's blog

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Planning for the Future: How Do We Evaluate Impacts in a World of Uncertainty?

Will planning horizons of 25 to 30 years make sense as transportation technology speeds through unprecedented rates of innovation?
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Public Transportation Ridership: Three Steps Forward, Two Steps Back?

Recent data showing declining transit ridership is only the latest news to cast doubt on expectations of a public transit renaissance.
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So Much for Peak VMT

Many observers and planners had hoped 2007 was the peak of vehicle miles travelled in the United States. After record-breaking increases in driving and auto sales, what are we to make of the present and future of driving in the United States?
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All I Want for Christmas Is a Driverless Car

An op-ed describes some of the not-so-hard to imagine drawbacks of a world full of a world full of self-driving cars.
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So the Chief Doc Says 'Take a Walk'

Though the role for planners in making it easier to walk was clear even before the U.S. Surgeon General urged communities to design and plan for walking, more information is needed to understand why and where people choose to travel on foot.
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Things Don't Change That Fast—Including the Housing Market

Digging into the data to get beyond the misleading notion of radical change in development patterns.
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Is Travel Behavior Changing? What the New Data Says

Over the past few weeks, the Federal Highway Administration released new data reporting annual 2014 travel levels, and analysts are busy interpreting and, in some cases, spinning the results.
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The Decline of Carpooling—Can App-Based Carpooling Reverse the Trend?

Contrary to the prevailing narrative about decreasing vehicle miles traveled runs a constant decline in the number of carpools. Very little is known about why Americans are carpooling so much less, so can mobile apps hope to reverse the the trend?
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Transportation Funding: Tougher than a Rubik's Cube

There are plenty of opinions but no action on the issue of transportation funding in the United States. What will it take to move the country—and its states, regions, and localities—forward?
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The True Cost of Driving and Travel Behavior

Over the past few years a variety of documents ranging from contemporary media to more serious research efforts have addressed the cost of auto ownership and use.  These estimates are often used to address two important transportation issues, the household benefits of using transit in lieu of auto ownership and/or the consideration of household location decisions in the context of the total cost of housing and transportation.  Two often referenced sources of research on these issues are the Center for Neighborhood Technology’s (CNT) initiatives in developing a housing and transportatio

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