Off-street parking requirements explain much of the difference in the density of major urban cities.
A recent article in Access magazine examines the effects of parking requirements on urban density, and compared the densities of Los Angeles, New York, and San Francisco. It shows that off-street parking requirements explain much of the difference in the density of these cities. It concludes that the simplest and most productive reform of American zoning would be to declare that all existing off-street parking requirements are maximums rather than minimums.
"Planners and urban criticswho regularly call for increased density as a salve for city life should realize that without corresponding changes in parking requirements, increased density will compound, rather than solve, the problems we associate with sprawl."
[Editor's note: The link below is to a 1MB PDF document.]
Thanks to The Practice of New Urbanism
FULL STORY: People, Parking, and Cities

Trump Administration Could Effectively End Housing Voucher Program
Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Ken Jennings Launches Transit Web Series
The Jeopardy champ wants you to ride public transit.

Rebuilding Smarter: How LA County Is Guiding Fire-Ravaged Communities Toward Resilience
Los Angeles County is leading a coordinated effort to help fire-impacted communities rebuild with resilience by providing recovery resources, promoting fire-wise design, and aligning reconstruction with broader sustainability and climate goals.

When Borders Blur: Regional Collaboration in Action
As regional challenges outgrow city boundaries, “When Borders Blur” explores how cross-jurisdictional collaboration can drive smarter, more resilient urban planning, sharing real-world lessons from thriving partnerships across North America.

Philadelphia Is Expanding its Network of Roundabouts
Roundabouts are widely shown to decrease traffic speed, reduce congestion, and improve efficiency.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Ada County Highway District
Clanton & Associates, Inc.
Jessamine County Fiscal Court
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Toledo-Lucas County Plan Commissions
Salt Lake City
NYU Wagner Graduate School of Public Service