20's Plenty

20 MPH speed limit sign

Denver Says 20 Is Plenty

Denver, dealing with an increase in traffic fatalities during the pandemic, has lowered speed limits on some residential streets. Critics say the new law neglects the most needed traffic safety changes.

December 23, 2021 - The Denver Gazette

Radar Speed Sign

Speed Limit Reform Spreading Across Minnesota

After the Twin Cities lowered speed limits in the urban core of the region in 2020, a trio of suburban cities are planning to follow. Two of the cities are planning to set some speed limits as low as 20 mph.

February 5, 2021 - Star Tribune

Speed Limit

'20 Is Plenty' in the Twin Cities

The first 20 mile per hour speed limit signs have been installed this week in the Twin Cities.

October 14, 2020 - Pioneer Press

Speed Limit

Portland Completes Massive 20 MPH Speed Limit Overhaul

All of Portland's 3,000 miles of residential streets now have a maximum speed of 20 miles per hour. Similar changes could be coming to more Oregon cities in the future.

April 10, 2019 - The Oregonian

Red Light

Proposed Safety Improvements in D.C.: Fewer Right Turns on Red Lights and 20 MPH Speed Limits

D.C. Mayor Muriel Bowser has proposed a slew of traffic safety changes, some of which could go into effect in early 2019.

October 25, 2018 - Greater Greater Washington

Traffic Safety

Scotland Could Take '20 Is Plenty' National

It looks very likely that Scotland will take unprecedented action—and global leadership—in the name of traffic safety.

May 19, 2018 - Price Tags

Speed Limit

Portland Lowers Most of its Speed Limits to 20 mph

Portland has implemented one of the most sweeping commitments to traffic safety of any city in the United States: 20 mph speed limits over the vast majority of the city's streets.

January 19, 2018 - Streetsblog USA

Seattle Speed Limits

Lower Speed Limits Are the Law in Seattle

The city of Seattle moved quickly in enacting a speed limit change on streets around downtown. File this under real change to achieve the goals of Vision Zero.

November 11, 2016 - The Urbanist

20's Plenty

Sweeping Speed Limit Reductions Proposed for Seattle's Streets

Two Seattle councilmembers are proposing a large, necessary step toward slowing drivers enough to eliminate traffic deaths in the city.

September 15, 2016 - The Urbanist

20's Plenty

Boston Lowers Speed Limits to 20 MPH—Columnist Sees Opportunity for Satire

A Boston Globe columnist met the news that the city would reduce speed limits to 20 mph on some residential streets with scorn and snark.

May 5, 2016 - The Boston Globe


NASCAR Announces '20 Is Plenty' Marketing Campaign

Traffic safety advocates scored a major coup when NASCAR announced its support of reduced speed limits.

April 1, 2016 - Planetizen April 1st Edition


Edinburgh Sets 20-mph Speed Limit

Citing pedestrian and cyclist casualties, the Scottish capital will reduce speed limits on 80 percent of its streets to a mere 20 mph. Backers are pushing for additional complete streets improvements.

March 17, 2016 - Next City

Pilot 20 mph Speed Limit Shows Multiple Benefits

A press release announcing the results of Edinburgh, Scotland's 20-mph speed limit pilot finds multiple benefits in walking, biking, and the number of children allowed outside.

September 23, 2014 - 20’s Plenty for Us

20mph Zones Saving Lives in London

Over the last decade, London has established more than four hundred 20 mph zones across the city. The 10mph decrease has had a significant effect on the number of fatalities.

March 23, 2010 - Streetsblog

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