20's Plenty
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.
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.
'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.
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.
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.
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.
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.
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.
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.
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.
NASCAR Announces '20 Is Plenty' Marketing Campaign
Traffic safety advocates scored a major coup when NASCAR announced its support of reduced speed limits.
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.
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.
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.
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.
Ascent Environmental
Borough of Carlisle
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
