The city's parallel transportation network, invented by companies like Facebook, Google and Apple, could be creating unforeseen consequences.
Highlights from the Sierra Club's list of the country's 50 best and worst.
China's fastest trains were unveiled today. Why the northeast corridor won't be getting similar treatment any time soon.
Bicyclists and public-bus commuters in San Diego are exposing themselves to a whole lot of crap in the air, according to new research.
MetroMile, an insurance company aimed at urban drivers with a low-car lifestyle, launched in Portland this month.
Turns out pedestrians who live in cities consistently over-estimate the amount of time it takes to walk somewhere. Why this matters to density.
A new study suggests that traffic reduction should be targeted at particular communities.
Starring a rusty Land Rover.
Austin and Pittsburgh don't fare very well in Walk Score's bikeability ranking.
Amtrak posts a record year, California approves high-speed rail, and more.
Sure, it could kill you, but there's no thrill quite like riding on the roof of a 125 mph commuter train.
To its credit, the animal behaved better than many public-transit riders.
A government tax incentive program has made cycles affordable for thousands.
Cities have largely given up on pedestrian scrambles — but some are bringing them back.
The French capital's third tramway extension in a month.
The Battle of the Commute rages on, as this painful-to-watch footage shows.
Soaring fuel costs, recession cutbacks, and high road taxes mean many are leaving their cars at home.
New York and Washington are easing their restrictions.