Topic: congestion
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Charts
Seriously, We Have to Stop Giving Away Free Parking to the Disabled
The placards harm transportation systems, the environment, and city coffers. And they don't really help those with disabilities.
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Maps
The Forgotten Urban Transportation Problem We Should Be Trying to Fix
Freight is crippling metro areas, but it's rarely part of city planning.
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Public Transportation Does Relieve Traffic Congestion, Just Not Everywhere
A new study finds that transit does cut down on traffic — but only on roads that parallel heavy transit corridors.
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Wanted: An App That Calculates Wait Times Straight to Your Airport Gate
A group of entrepreneurs are working on technology that could vastly improve the universally terrible experience of airports.
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How Flight Delays Spread From Airport to Airport Like a Disease
Air travel congestion can quickly spread from a few cities to a whole network.
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Do Big City Drivers Actually Have It Worse?
The latest look at how much time American commuters spend in traffic, and the methodology problems that come along with it.
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How Virtual Traffic Lights Could Cut Down on Congestion
Car-to-car communication could decrease urban congestion by 60 percent, one computer scientist says.
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The Case Against One-Way Streets
One civil engineer believes trip capacity will increase if cities turn to two-way streets.
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4 Great Transportation Projects to Watch (and 4 Awful Ones)
Highlights from the Sierra Club's list of the country's 50 best and worst.
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More Cars on the Road Make You Late, But Some Cars Make You Much Later Than Others
A new study suggests that traffic reduction should be targeted at particular communities.
