Traffic Congestion

Alibaba

Study: E-Commerce Decreases Traffic Congestion in China

Examining congestion data from 94 Chinese cities before and after Alibaba's Singles' Day, this study found evidence for a modest drop in traffic following the Cyber Monday-like event.

November 3, 2019 - IDEAS

San Francisco, California

Social Equity Cited in Veto of California Road Pricing Bill

Gov. Gavin Newsom vetoed a unique road pricing bill due to concerns that charging a fee would limit access to driving on two blocks of Lombard Street, a popular tourist attraction in San Francisco that is severely congested.

October 18, 2019 - ABC KGO TV 7 - San Francisco

Texas Highways

Smart Congestion Costing: A Critical Evaluation of the 'Urban Mobility Report'

The new "Urban Mobility Report" provides widely-cited congestion cost estimates. However, its analysis is neither comprehensive nor objective. Anybody using these estimates should understand its omissions and biases.

August 29, 2019 - Todd Litman

Radar Speed Sign

The Case for Slower Cities

Lower speed limits make cities safer, more livable, and, in the long run, more functional.

August 22, 2019 - CityLab

Congestion versus mobility

No, Traffic Congestion Does Not Really Cost Every American $1,348 Annually

The INRIX Global Traffic Scorecard exaggerates congestion costs in order to enhance the value of its traffic monitoring services. A little skepticism is justified.

February 13, 2019 - Todd Litman

Subway Station

A Better Travel Experience

Transportation engineers sometimes treat people as objects to be moved as quickly and cheaply as possible from one location to another, but people have preferences and feelings which should be considered when planning transport systems.

January 17, 2019 - Todd Litman

SEPTA bus

In Philadelphia, Improving Bus Service by Tackling Traffic Congestion

With buses crawling along through downtown Philadelphia, the city has plans to step up law enforcement to help them move faster.

October 4, 2018 - The Philadelphia Inquirer

Carpool Lane Sticker

220,000 EV Drivers in California to Lose Carpool Lane Perk in 2019

The good news: the Clean Air Vehicle program for electric vehicles will be extended for at least three years. The bad news: not all EVs that have a decal now will be able to be renewed. Congestion on HOV and HOT lanes is a major concern.

September 21, 2018 - Los Angeles Times

Bay Bridge Toll

Another Reason Motorists Should Support Road Tolling

Two things motorists detest: tolls and congestion. Tolls, if effectively applied, lessen congestion, but at a high cost to drivers. However, steep tolls also provide a political incentive to "fix the bottlenecks," as shown by the 66 Express Lanes.

September 4, 2018 - WTOP

Davis and Sacramento

Widening I-80 from Davis to Sacramento: HOT Lane or HOV Lane?

Caltrans is studying a plan to widen 16 miles of Interstate 80 through Solano and Yolo counties, over the Yolo Bypass. Initially, the plan called for a carpool lane, but uncertainty about funding makes a toll lane a possibility.

June 5, 2018 - The Sacramento Bee

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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.

Hand Drawing Master Plans

This course aims to provide an introduction into Urban Design Sketching focused on how to hand draw master plans using a mix of colored markers.