Study: 'Eyes on the Street' Have Real Value for Neighborhood Safety

The first study to make an attempt at quantifying the value of "eyes on street"—an idea most eloquently described by Jane Jacobs—offers reason to support a mix of uses, with businesses operating later in the evening.

1 minute read

July 24, 2017, 2:00 PM PDT

By James Brasuell @CasualBrasuell


Bushwick

Christian Mueller / Shutterstock

"In June, a team of researchers released a paper, titled 'Analysis of Urban Vibrancy and Safety in Philadelphia,' that attempts to begin a quantitative analysis of Jacobsian theory by bringing together publicly available data sets related to crime, business activity and the built environment," according to an article by Jared Brey.

Three statisticians from the Wharton School at the University of Pennsylvania conducted the study, investigation "the correlations between public safety and population density, population count, zoning, business activity, and business hours."

Brey details the study's methodology and summarizes its findings. One conclusion to draw from the study: that busineses should be allowed to operate at longer hours. According to Shane Jensen, a statistics professor at Wharton, the findings are tentative but should still give planners and city officials reasons to think about the effect of businesses in a neighborhood. 

Wednesday, July 19, 2017 in Next City

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

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.

7 seconds ago - 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.

2 hours ago - The Washington Post

Bird's eye view of studio apartment design.

In These Cities, Most New Housing is Under 441 Square Feet

With loosened restrictions on “micro-housing,” tiny units now make up as much as 66% of newly constructed housing.

4 hours ago - Smart Cities Dive