Why Cyclists Run Red Lights

Mostly to turn or because the signal doesn't recognize them, according to the latest research.

Paramount Pictures

How Traffic Jams Became a Common Movie Trope

By trapping characters indefinitely, fictional jams can set up otherwise implausible plotlines.


Hate Traffic? How About a Hug

Traffic Psychologists in Sao Paolo try to cheer up the city's drivers with signs, high fives, and physical affection.


Study of the Day: Planners Miscalculate Benefits of New Roads

Researchers in Denmark found that municipalities underestimate the economic and environmental impact of new roads.

Feargus O'Sullivan

It's Beginning to Look a Lot Like the Olympics

London's traffic is being re-routed, bunting is being hung and public art is sprouting up in advance of the Games.

Mark McKeague

In the Future, Traffic Might Sound Less Like 'Honk' and More Like 'Eee-Beep-Boop'

A British designer wants to turn the noise of electric cars into a city-wide, experimental symphony.


Traffic Noise Might Give You a Heart Attack

Louder streets have been linked to greater risk of cardiac arrest.

NYC Dept. of Transportation

Freeway Removal Hits a Roadblock in the Bronx

Reports of the death of the Sheridan Expressway have been greatly exaggerated.


Could Density Actually Reduce Traffic?

Yes, according to one new study.


Rethinking the Economics of Traffic Congestion

Traffic is not an economic problem. It’s an indicator of a healthy urban economy. 


Chicago's Ambitious Plan for Zero Traffic Fatalities

Can a city reduce the number of deaths to zero?


How to Avoid the Worst Traffic Jams in the Most Congested U.S. Cities

Stay away from these roadways, especially on Friday evening.

"Brussels Express"

Navigating Europe's Most Congested City by Bike

If you think all European cities embrace cycling as much as Copenhagen, you must not be familiar with Brussels.


How Twitter Helped One Man Become Chicago's Most Popular Cab Driver

Rashid Temuri has more than 4,100 followers and more service calls than he can handle.


Greening Traffic Lights By Turning Them Off

If sign-less intersections reduce collisions, they almost certainly also consume less energy.


Slowing Down Cars Saves Lives. So Why Is Toronto's Mayor So Opposed?

Lowering speed limits can greatly cut down on pedestrian injuries. But Rob Ford thinks one such proposal is "nuts."


Is Traffic Making Us Lonely?

Long before the invention of social media, a man named Donald Appleyard was investigating how automotive traffic isolates us from one another.

Traffic Explained in Less Than 4 Minutes

A video on what causes congestion, and how to fix it.


Time-Shifting the Morning School Rush

If you can't avoid a car commute, maybe you can slightly change what time you do it.