Drivers Sidelined By Critical Mass Riders

San Francisco's Critical Mass bike ride has become an institution in the city, giving cyclists a monthly chance to physically advocate bike awareness.

1 minute read

August 13, 2007, 11:00 AM PDT

By Nate Berg


"Some call it a bicycle insurrection against the thoughtless motorists who hog city streets. Others say it's about nothing more than fun."

"On the last Friday of each month, the cyclists of Critical Mass embark on an unrehearsed crosstown jaunt that -- for a few hours -- transforms the urban landscape."

"When Critical Mass hits the streets, bikes rule. Sometimes with sharp elbows, riders brush aside the cars, trucks and buses that stand in their way. And often, tempers flare."

"Critical Mass riders, who refer to themselves as 'massers,' insist that they're not tying up traffic -- they are the traffic, albeit a two-wheeled variety. Their aim is to force cars to share the road and leave enough room for bike lanes, so cyclists won't have to fear injury and death."

"'For 29 days a month, cars call the shots. It's Auto Mass,' said Kate McCarthy, a member of the San Francisco Bicycle Coalition. 'But for a few hours of one day, we turn the tables. We take the streets back.'"

Monday, August 13, 2007 in The Los Angeles Times

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

Cover CM Credits, Earn Certificates, Push Your Career Forward

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.

June 18, 2025 - Diana Ionescu

Rendering of Shirley Chisholm Village four-story housing development with person biking in front.

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning

SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

June 8, 2025 - Fast Company

Yellow single-seat Japanese electric vehicle drivign down road.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs

The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

June 6, 2025 - PC Magazine

Close-up of cracked and damaged two-lane roadway with double yellow stripes on a bright sunny day.

Engineers Gave America's Roads an Almost Failing Grade — Why Aren't We Fixing Them?

With over a trillion dollars spent on roads that are still falling apart, advocates propose a new “fix it first” philosophy.

5 hours ago - Transportation for America

Group of e-scooters messily parked on street in London with black cab in background.

The European Cities That Love E-Scooters — And Those That Don’t

Where they're working, where they're banned, and where they're just as annoying the tourists that use them.

6 hours ago - Bloomberg CityLab

Map of Western U.S. indicating public lands that would be for sale under a Senate plan in yellow and green.

Map: Where Senate Republicans Want to Sell Your Public Lands

For public land advocates, the Senate Republicans’ proposal to sell millions of acres of public land in the West is “the biggest fight of their careers.”

7 hours ago - Outdoor Life