Congestion

December 12, 2011, 10am PST
With pollution levels becoming dangerous in Rome, Italy, the government is taking a hard line on driving. In late November, only cars with even-numbered license plates were allowed to drive in the city, with odd plates the next.
TheCityFix.com
October 12, 2011, 9am PDT
On July 1, 85,000 hybrid vehicles in CA bearing clean-air stickers lost the privilege to drive solo in the carpool lane. UC Berkeley researchers show how that exclusion slowed speeds in the HOV lane while increasing congestion in the adjacent lanes.
San Francisco Chronicle
October 7, 2011, 7am PDT
The Texas Transportation Institute (TTI) released its 2011 Urban Mobility Report, which shows how many additional hours in traffic each commuter would be subject to if public transportation were discontinued.
Urbanophile
Blog post
October 4, 2011, 1pm PDT

In a recent post, Todd Litman criticized the Texas Transportation Institute's Urban Mobility Report.  In this post, I'd like to do something a little different: assume that TTI's congestion estimates are more or less reliable, and try to learn something from them.  So here are a few observations:

Michael Lewyn
September 28, 2011, 9am PDT
Joe Peach compares the approach to mollifying congestion in five world cities, with contrasting results.
This Big City
September 27, 2011, 9am PDT
With the worst traffic in the country (see previous story), Washington has big problems. But Stewart Schwartz suggests that big problems don't necessarily call for big solutions.
Greater Greater Washington
July 27, 2011, 12pm PDT
Officials in Moscow are pushing a plan to double the footprint of the city in order to ease congestion and overcrowding. Some worry sprawling development patters will follow.
Guardian
June 3, 2011, 8am PDT
Mauricio Macri, the mayor of Buenos Aires, inaugurated Argentina's first bus rapid transit system today, marking its first day of operation.
TheCityFix.com
May 19, 2011, 8am PDT
Transportation is increasingly seen as a major concern as London prepares to host the 2012 Summer Olympics. As crowds fill the city, many wonder whether it will be able to handle the load and keep everyone moving.
The Guardian
March 19, 2011, 7am PDT
This video from <em>Streetfilms</em> explains the concept of congestion pricing and looks at how it can affect cities and their mobility.
Streetfilms
March 4, 2011, 6am PST
This post from <em>The City Fix</em> looks at how holidays cause mass movements of people, especially Muslims in Indonesia, and what impact those movements can have on transportation systems.
The City Fix
February 11, 2011, 10am PST
Imbalances between the amount of cars being added to the roadways in China's cities and the amount of roads for them to drive on is brewing a major traffic problem.
Miller-McCune
January 26, 2011, 7am PST
Getting around Atlanta can be a challenge, according to some in the city. And as growth continues, public transit will need to play a bigger part in moving the city, according to this article.
The Atlanta Journal-Constitution
January 1, 2011, 5am PST
In an effort to reduce congestion, Beijing is planning to reduce the amount of vehicle registrations it issues.
Inhabitat
December 29, 2010, 6am PST
At Disney World, getting millions of visitors through the lines of their desired attractions faster is a huge logistical challenge. The theme park is taking a high-tech approach to the problem.
The New York Times
October 8, 2010, 1pm PDT
The Texas Transportation Institute's Urban Mobility Report ranks the country's most congested cities, a list almost always topped by Los Angeles. But as Mark Vallianatos writes, the ranking misrepresents reality.
Streetsblog
September 30, 2010, 10am PDT
Analysis indicates that compact development reduces the time urban residents spent in traffic and requires less spending on highways.
Driven Apart: How Sprawl Is Lengthening Our Commutes and Why Misleading Mobility Measures Are Making Things Worse
September 16, 2010, 2pm PDT
The transportation agencies of Los Angeles and Beijing -- two of the world's most congested cities -- are joining forces to address their traffic issues.
The Source
August 30, 2010, 12pm PDT
The recent 11-day traffic jam in China was no fluke. As <em>The Economist</em> explains, the crushing congestion is little more than a real-world example of imbalances in supply and demand.
The Economist
August 17, 2010, 8am PDT
The addition of a 10-mile carpool lane to one of Los Angeles' busiest freeways is creating a huge stress on the region's transportation system.
The New York Times