New Study: More Parking=More Driving

A new U of PA study, 'Guaranteed Parking, Guaranteed Driving' compares two NYC neighborhoods, showing decisively that providing off-street parking is a sure way to guarantee more driving.

1 minute read

October 25, 2008, 11:00 AM PDT

By Irvin Dawid


"The study (by University of Pennsylvania planning professor Rachel Weinberger), "Guaranteed Parking, Guaranteed Driving", compares parking and commuting habits in Park Slope, Brooklyn and Jackson Heights, Queens. The study finds that despite having the same car ownership and very similar access to public transit to the Central Business District, Jackson Heights residents are 45% more likely to drive to work in the Central Business District and 28% more likely to drive to work in general.

The study concludes that Jackson Heights car owners are more likely to drive to work because of guaranteed, off-street parking spots to return to at the end of the day."

From Steetsblog: Study - City Residential Parking Requirements Lead to More Driving: "In August, Weinberger teamed with Transportation Alternatives and other groups concerned about parking reform to issue "Suburbanizing the City". [See related link] That study estimated that the city's parking requirement would generate a billion miles of new traffic a year by 2030. "Guaranteed Parking" substantiates that finding, and provides more evidence that New York City zoning regulations promote driving to work, even when viable transit options are available."

Thanks to John Holtzclaw

Wednesday, October 15, 2008 in Transportation Alternatives

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

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

June 11, 2025 - Diana Ionescu

Metrorail train pulling into newly opened subterranean station in Washington, D.C. with crowd on platform taking photos.

Congressman Proposes Bill to Rename DC Metro “Trump Train”

The Make Autorail Great Again Act would withhold federal funding to the system until the Washington Metropolitan Area Transit Authority (WMATA), rebrands as the Washington Metropolitan Authority for Greater Access (WMAGA).

June 2, 2025 - The Hill

Large crowd on street in San Francisco, California during Oktoberfest festival.

The Simple Legislative Tool Transforming Vacant Downtowns

In California, Michigan and Georgia, an easy win is bringing dollars — and delight — back to city centers.

June 2, 2025 - Robbie Silver

Color-coded map of labor & delivery departments and losses in United States.

The States Losing Rural Delivery Rooms at an Alarming Pace

In some states, as few as 9% of rural hospitals still deliver babies. As a result, rising pre-term births, no adequate pre-term care and "harrowing" close calls are a growing reality.

7 hours ago - Maine Morning Star

Street scene in Kathmandu, Nepal with yellow minibuses and other traffic.

The Small South Asian Republic Going all in on EVs

Thanks to one simple policy change less than five years ago, 65% of new cars in this Himalayan country are now electric.

June 15 - Fast Company

Bike lane in Washington D.C. protected by low concrete barriers.

DC Backpedals on Bike Lane Protection, Swaps Barriers for Paint

Citing aesthetic concerns, the city is removing the concrete barriers and flexposts that once separated Arizona Avenue cyclists from motor vehicles.

June 15 - The Washington Post