Fill Cars, Fight Traffic

According to the Ridesharing Institute, filling out cars with more passengers may be the cheapest, simplest way to ease congestion, reports Emily Badger. However novel strategies must be introduced to overcome the broad decline in carpooling.

1 minute read

February 2, 2012, 8:00 AM PST

By Anonymous (not verified)


Whether through carpooling, slugging, or vanpooling, filling in all those empty seats on the highway could be the answer to easing congestion, beginning with just one workday a week. And the Ridesharing Institute isn't necessarily talking about old-school carpooling either: social media and technology is helping the organization push for more convenient, user-accommodating arrangements.

"Developing the best models will require actual R&D (although a small amount has been done and "soft" efforts to change mentalities has shown some promise). But while ridesharing currently accounts for about 10 percent of commuting trips, it gets nowhere near that in budget allocations or R&D funding from transportation agencies or large employers. Transit, bike, and pedestrian infrastructure have a similar problem because, on the whole, most of our attention and money goes toward accommodating single drivers and their cars."

Friday, January 27, 2012 in Miller McCune

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

High-rise apartment buildings in Waikiki, Hawaii with steep green mountains in background.

Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss

The plan would reduce visitor accommodation by 25% resulting in 1,900 jobs lost.

April 6, 2025 - Honolulu Civil Beat

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

Streetcar and bus stopped at station on Market Street in San Francisco with Ferry Building visible in background.

Waymo Gets Permission to Map SF’s Market Street

If allowed to operate on the traffic-restricted street, Waymo’s autonomous taxis would have a leg up over ride-hailing competitors — and counter the city’s efforts to grow bike and pedestrian on the thoroughfare.

April 16 - San Francisco Examiner

Parklet with wooden benches and flower boxes on street in Ireland.

Parklet Symposium Highlights the Success of Shared Spaces

Parklets got a boost during the Covid-19 pandemic, when the concept was translated to outdoor dining programs that offered restaurants a lifeline during the shutdown.

April 16 - Streetsblog San Francisco

Bronze statue of homeless man (Jesus) with head down and arm outstretched in front of St. Matthew Cathedral in Washington D.C.

Federal Homelessness Agency Places Entire Staff on Leave

The U.S. Interagency Council on Homelessness is the only federal agency dedicated to preventing and ending homelessness.

April 16 - The New York Times