We've got a "typology radar graph" for that.
Readers offer their suggestions — with road fare emerging as a top choice.
Delivery trucks are responsible for a big chunk of the congestion we experience. Here are some ideas for getting them off the road.
The people and ideas reshaping urban life
How not to save parking spots during a historic snowfall.
Hot-air balloons! Squishy, non-circular wheels! A competition to rethink bicycling in Singapore is producing some strange results.
Riding a bike may have special benefits that other exercise modes don’t, but we just don't know enough about it.
Considering the "historic" blizzard in this weekend's weather forecast and all.
It's the oldest, dumbest trick in the book.
The latest look at how much time American commuters spend in traffic, and the methodology problems that come along with it.
The biggest one is simply that Americans drive more.
Innovative programs have helped turn the city from one of the world's most dangerous places into one of the safest areas in Mexico.
The country reconsiders a massive rail project.
Images of Seattle and Barcelona offer fresh insight into the way pedestrians interact with the built environment.
Car-to-car communication could decrease urban congestion by 60 percent, one computer scientist says.
For too many American families, this is not a problem that's easily solved.
China's rail systems will handle an average of 5.2 million trips a day.
The need for better awareness about traffic strategies is quite clear.
Riders on Washington, D.C.'s Green Line endured hours of chaos and panic Wednesday night.