Critical Mass on Eight Wheels

Streetfilms looks at the livable streets movement in Paris and a twice-weekly "critical mass" over roller skaters that often brings crowds of thousands.

1 minute read

April 26, 2008, 5:00 AM PDT

By Nate Berg


"Every Friday night and Sunday afternoon Parisians can take the streets and see their city on skates. And they do, by the thousands! Both mass rides, which are sponsored by different associations, started small and now are institutions of public street life in Paris."

"A little history: The Friday night skates were started by a small group of friends. After the transit strikes in 1995, which forced Parisians to find a new way to get around town, thousands of people began to show up on Friday evenings just to practice moving through the city on roller blades. The numbers inspired Pari Roller to form an official association working with Paris', and the world's, first roller blade national police unit."

Thursday, April 24, 2008 in Streetsblog

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

September 23, 2026 - Zachary Whalen

Passengers board an Amtrak train under a cloudy sky.

Amtrak, CN end decades-long dispute with eight-year agreement

The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.

September 18, 2026 - Mass Transit

The Gross Reservoir, a large body of water surrounded by trees and mountains.

Judges permit Denver to divert 77,000 acre feet from the Colorado River for reservoir expansion

Overuse and climate change have caused the Colorado River’s water levels to plummet.

September 18, 2026 - Inside Climate News

People walk through Philadelphia International Airport. There is a convince store on the right.

Philadelphia to invest $2 billion into upgrading city airports as PHL places last in customer satisfaction

Modernizations to Philadelphia's airports will include baggage system upgrades and a new automated parking garage guidance system.

6 hours ago - WHYY

A downtown area in Los Angeles, with a Taco Bell visible. People wait to cross the street towards a tall apartment building.

The LA housing policies making developers turn away from the city

Despite LA’s housing shortage, developers say the city’s "mansion-tax" and pandemic-era policies make it an unappealing place to build housing.

7 hours ago - Los Angeles Times

People cross a wide street in San Francisco, with tall buildings in the background.

New density bill would require 7 California cities to establish regional transit hubs

The bill would also require major cities in California to permit high-rise residential buildings.

September 23 - Smart Cities Dive