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.

1 minute read

December 23, 2021, 8:00 AM PST

By James Brasuell @CasualBrasuell


"The default speed limit on Denver’s unposted streets will soon be lowered from 25 mph to 20 mph after the Denver City Council approved the change Monday," reports Hannah Metzger for The Denver Gazette.

"The approved measure will reduce the default speed on city streets where no limit is posted, applying most specifically to neighborhood streets with no center line," adds Metzger. "The Department of Transportation said it will also decrease the speed limits of posted neighborhood streets to 20 mph beginning in 2022."

Councilmember Kendra Black was the sole no vote on the change. The article provides space for the councilmember to make the case that the speed limit changes are targeting the wrong kind of street, with arterials the source of the most carnage on local roads.

Like many other Vision Zero cities, the recent years has been particularly deadly—with the most fatalities since the city announced its Vision Zero initiative in 2016. There does seem to be an uptick in the number of cities lowering speed limits. Norfolk, Virginia was the previous example picked up by Planetizen.

Monday, December 20, 2021 in The Denver Gazette

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

Wastewater pouring out from a pipe.

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage

Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

April 13, 2025 - Inside Climate News

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.

April 16, 2025 - Diana Ionescu

Black and white photos of camp made up of small 'earthquake shacks' in Dolores Park in 1906 after the San Francisco earthquake.

The 120 Year Old Tiny Home Villages That Sheltered San Francisco’s Earthquake Refugees

More than a century ago, San Francisco mobilized to house thousands of residents displaced by the 1906 earthquake. Could their strategy offer a model for the present?

April 15, 2025 - Charles F. Bloszies

People walking up and down stairs in New York City subway station.

In Both Crashes and Crime, Public Transportation is Far Safer than Driving

Contrary to popular assumptions, public transportation has far lower crash and crime rates than automobile travel. For safer communities, improve and encourage transit travel.

7 hours ago - Scientific American

White public transit bus with bike on front bike rack in Nashville, Tennessee.

Report: Zoning Reforms Should Complement Nashville’s Ambitious Transit Plan

Without reform, restrictive zoning codes will limit the impact of the city’s planned transit expansion and could exclude some of the residents who depend on transit the most.

April 18 - Bloomberg CityLab

An engineer controlling a quality of water ,aerated activated sludge tank at a waste water treatment plant.

Judge Orders Release of Frozen IRA, IIJA Funding

The decision is a victory for environmental groups who charged that freezing funds for critical infrastructure and disaster response programs caused “real and irreparable harm” to communities.

April 18 - Smart Cities Dive