Studies show that in successful cities the roads just clog up again.

Think banning cars by license plate number is a good practice? That may actually be counterproductive.

Stockholm and London are famous for congestion charging to keep cars out of central districts. Now Milan's heading that direction, with impressive results

Here at TreeHugger, we talk quite a bit about the causes and problems with roads and traffic, and we've seen how effective congestion pricing can be. Here's one more study showing that more roads are not the answer to our

London's electric car charging points are in for a big boost. There are 250 publicly-accessible charge points now. By 2012 there will be 1,300 across the city.

IBM (yes, the IBM) recently released a global study of traffic, surveying over 8,000 adult drivers in 20 major cities. Perhaps the results are not that surprising - traffic is perceived by drivers as getting worse in the last

At Mercedes Benz World last week, while the men were test-driving Mercedes Benz sports cars on the test track, this TreeHugger was merrily chugging along in the new electric smart fortwo Smart Car which will be out at the end of

Images via Marten Wallgren The Future City Mobility competition enticed designers to envision how London's transportation could look in 2030. Marten Wallgren, a Swede studying at the Royal College of Art, along with three cohorts, took the SeymourPowell

Zipcar has been a game changer, but Robin Chase is already on to other things. The next frontier in transportation is a smart network that has your car, iPhone, GPS, and other gizmos sharing chatter with streetlights, power utilities, your insurance

To Robin Chase, parked cars and solo drivers just look like a great big mess of wasted capacity. It’s this kind of thinking that inspired her to start Zipcar (now the world’s largest carsharing company), and GoLoco, the Facebook of ridesharing. It’s

The congestion charge in London is being reconsidered to make it more effective and "intelligent". A new Mayor brings new views, and London's Mayor Boris Johnson is having second thoughts about the controversial charge. He has

New York City's sustainability efforts under its comprehensive PlaNYC 2030 boosted it above Beijing, which scrambled to clean up its air before hosting the Olympics, and three other international

The congestion charge has run into some serious opposition in England lately. It's the charge on drivers entering the central core which has been such a success in cutting down traffic in London and other big cities. The first defeat was a decision by

London has a new Mayor who has started filling some of his campaign promises. One of the main items on the list was the pledge to bring back the iconic and much-missed double decker bus.

As in world bike-capital Portland, Oregon, so in (relative) biking backwater Gothenburg, Sweden - short-hop urban biking can be a breeze, but try biking from the far suburbs in to central city locales. Your mileage and your experience will vary

Rule 123 of the Highway Code states that "If the vehicle is stationary and likely to remain so for more than a couple of minutes, you should switch off the engine to reduce emissions and oil pollution." The problem is that it

Oslo's city government has promised to install 400 electric car charging/parking places over the next four years. Meanwhile Norway's electric car manufacturer THINK is turning out its THINK city cars at the rate of just three per day, which has created

Londoners have a love-hate relationship with the congestion charge. It is great if you are walking or taking the bus or are interested in the environment, but at the same time it is a royal pain if you have to drive into town and don't want to waste