New York Speed Limiting Pilot Shows Promising Results

City vehicles equipped with speed limiting technology showed nearly complete compliance with speed limit laws and a significant reduction in hard-braking events.

1 minute read

January 19, 2023, 5:00 AM PST

By Diana Ionescu @aworkoffiction


Pedestrians and Cars

Flystock / Shutterstock

An intelligent speed assistance (ISA) pilot program launched by New York City on 50 city vehicles last August proved successful in improving compliance with speed limit laws, reports Danielle McLean for Smart Cities Dive.

According to the article, “During that time, hard-braking events were reduced by 36% and vehicles complied with local speed limits 99% of the time, with the 1% representing the time between the initial acceleration and the time it takes for the ISA to reduce the speed.”

The city’s Safe Fleet Transition Plan for city fleet vehicles, updated in 2018, “formalized a set of best-practice vehicle safety technologies for all City vehicles to prevent and mitigate crashes, in direct support of Vision Zero,” according to the plan’s introduction.

The city’s Department of Citywide Administrative Services (DCAS) will assess the full results after the program ends next year and “has also requested federal grant funding to broaden the rollout of ISA technology for about 7,500 fleet vehicles over three or four years.” 

Last year, the National Transportation Safety Board (NTSB) recommended that the federal government require speed limiting technology on new cars, a suggestion that earned critical fear mongering from some pundits who viewed it as an invasion of privacy (more on that here).

Wednesday, January 18, 2023 in Smart Cities Dive

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

Get top-rated, practical training

Historic homes in St. Augustine, Florida.

Florida Considers Legalizing ADUs

Current state law allows — but doesn’t require — cities to permit accessory dwelling units in single-family residential neighborhoods.

March 18, 2025 - Newsweek

Aerial view of suburban housing near Las Vegas, Nevada.

HUD Announces Plan to Build Housing on Public Lands

The agency will identify federally owned parcels appropriate for housing development and streamline the regulatory process to lease or transfer land to housing authorities and nonprofit developers.

March 17, 2025 - The Wall Street Journal

Bird's eye view of manufactured home park.

Manufactured Crisis: Losing the Nation’s Largest Source of Unsubsidized Affordable Housing

Manufactured housing communities have long been an affordable housing option for millions of people living in the U.S., but that affordability is disappearing rapidly. How did we get here?

March 25, 2025 - Shelterforce

Brick buildings on small town street with red awnings on first floor businesses.

Research: Walkability Linked to Improved Public Health

A study reveals that the density of city blocks is a significant factor in communities’ walkability and, subsequently, improved public health outcomes for residents.

15 minutes ago - Great Lakes Echo

Aerial view of neighborhood under construction with houses and vacant lots.

Report Outlines Strategies for Resilient Wildfire Recovery in LA

Project Recovery offers a roadmap for rebuilding more sustainable and climate-resilient communities after wildfires and other disasters.

1 hour ago - Urban Land Institute

Red rock landscape in Bears Ears National Monument, Utah.

New Executive Order Renews Attack on Public Lands

An order issued late last week pushes for increased mineral extraction on federally owned public lands.

2 hours ago - Rocky Mountain Community Radio