Eric Jaffe


Public Transportation Does Relieve Traffic Congestion, Just Not Everywhere

A new study finds that transit does cut down on traffic — but only on roads that parallel heavy transit corridors.

Is Google Maps Changing Our Behavior?

For better or worse, people sacrifice spatial orientation for convenience.


Why Driverless Cars Are 'Probably' Legal

A recent legal paper makes the case that existing laws don't prohibit automated vehicles.


Do Texting Bans Really Prevent Fatal Accidents?

New research says yes — but only under certain conditions.


After Decades of Sprawl, Density Comes to Denver

The city's push for transit-oriented development has paid off, according to a new report.

All Aboard Florida

Can Private Intercity Passenger Rail Make a Comeback?

All Aboard Florida, a passenger service planned for the Orlando-to-Miami corridor, may soon find out.


The Bullet Train as a Boost for Second-Tier Cities

A new report finds that high-speed rail lines make satellite areas more attractive while relieving pressure on major cities.


Presenting Digital Harlem — and the Australians Who Run It

The odd partnership has produced enormous historical insight into everyday life in the neighborhood.

Virginia DOT

How Park-and-Ride Encourages Car Use

A new study finds that people who used to make the whole trip by bike or transit now drive to the station.


Is It Time to Move Past Urban Studies and Toward Urbanization Science?

Some scholars are calling for a stronger understanding of the "DNA" of cities — and, by extension, an improved ability to address urban problems in a systemic manner.


The Economic Case for Rail Subsidies

Service increases may pay for themselves through emissions reductions and safety improvements, even before factoring in congestion.

jbcurio/Wikimedia Commons

Mass Transit Use Isn't Up Everywhere

Public transportation ridership is up across the U.S., but the opposite is true in many cities that voted down funding measures last year.


A Brief History of Suburbia's Rise and Fall

A new paper tracks suburbia from its ideological roots in the Victorian era to its harsh detractors in the modern age.

Cory Bortnicker

Now These Could Be Useful: Pedestrian Penalty Cards

Cory Bortnicker takes a humorous approach to enforcing sidewalk etiquette.


A Conflict Resolution Scholar Explains How to Resolve Conflicts in the Quiet Car

Andrea Bartoli suggests an approach that presumes ignorance on the part of offenders.


The End of Federal Transportation Funding as We Know It

The diminishing power of the gas tax has renewed debate about how — and even whether — Washington can pay for local roads and rails.


Jane Jacobs Was Right: Gradual Redevelopment Does Promote Community

A study in Chicago shows a link between housing age diversity and social relations.


Code Enforcement Goes High-Tech

CityScan uses street-mapping technology and public records to find hidden violations.

Wikimedia Commons

How Free Transit Works in the United States

Chapel Hill has been a fare-free system since 2002 and is still going strong.