Transportation is often a means to an end — a way to access goods, services, or opportunities — and is inextricably linked with the built environment and quality of life. The Transportation & Communities program examines transit-oriented communities, transportation and urban design, linkages between mobility and gentrification, active transportation, pedestrian and bicycle planning, complete streets, and livable streets.  

Lead Scholars

Anastasia Loukaitou-Sideris
Anastasia Loukaitou-SiderisProfessor of Urban Planning
Dana Cuff
Dana CuffProfessor of Architecture/Urban Design and Urban Planning
Michael Manville
Michael ManvilleAssociate Professor of Urban Planning

Other Scholars

Robin Liggett
Professor Emeritus of Urban Planning

Taner Osman
Lecturer in Urban Planning

Paul Ong
Professor of Urban Planning

Martin Wachs
Distinguished Professor Emeritus of Urban Planning

The Latest

Cars Make Your Life More Expensive, Even If You Don’t Have One
Vice — 2020

The death of the sidewalk
The Washington Post — 2019

The Political Battle Over California’s Suburban Dream
CityLab — 2019

Want to Boost Transit Ridership? Try Making Women Feel Safer
Wired — 2019

Transit-Oriented Displacement or Community Dividends?
New book co-authored by Anastasia Loukaitou-Sideris takes a novel and critical look at the effects of compact development around urban transit systems.
MIT Press — 2019

Crenshaw Line Shows Transit Cuts Both Ways in Housing Crisis
KPCC — 2017

Watching Los Angeles Gentrify
CityLab — 2016

As High-Speed Rail Gains Momentum, U.S. Can Look to Europe’s Example
Los Angeles Times — 2015

Selected Research Publications

Michael Manville — 2017
One of the most enduring ideas in urban planning is that compact cities make people drive less. This proposition is intuitive — people in cities such as San Francisco do drive less than people in ­places such as Jacksonville — but it is also difficult to prove. The literature around travel and built environment yields weak and sometimes contradictory results. Is it time to turn the approach on its head?
Automatic Street Widening: Evidence From a Highway Dedication Law
Michael Manville — 2017
Cities often require developers to widen streets or make other transportation improvements to account for the traffic impacts of new building. But parcel-level traffic mitigation often becomes an exercise not in reducing traffic but in ensuring that developers carry out mitigations, regardless of whether those mitigations are effective. Is automatic street widening accurate, verifiable, or effective?
Martin Wachs — 2013
While downtowns were thought to be in long-term decline 40 years ago, central business districts are today the most vibrant residential and commercial centers throughout largely suburban North America. What role has transportation technology and policy played in the earlier decline and recent revival of American downtowns? And what challenges does transportation pose to the continuation of urban regeneration?

Other Research

Bicycle Crash Risk: How Does It Vary, and Why?
Robin Liggett, Jill Cooper, Herbie Huff, Ryan Taylor-Gratzer, Norman Wong, Diana Benitez, Timothy Douglas, James Howe, Julia Griswold, David Amos, Frank Proulx — 2016

Recent Projects