Rail and bus use are way up in London. Photo by Éole.
The car driven sprawl of the Americas’ largest metropolis, Mexico City. Photo by Pablo Pozo.
China added more than 2 million kilometers of road in the past two decades, encouraging personal vehicle usage. Photo by Joe Dunckley.
Hundreds of thousands of vehicles have been court ordered to use convert to CNG in the Indian State of Gujarat. Photo by vipez.
A congested Brazilian highway. Photo by Paulo Fehlauer.
U.S. Postal Service Trucks, the largest contributor to the federal government fleet of vehicles.
How can we encourage standards for less polluting fuels? Photo by Meena Kadri.
A new BRT line in Chicago's downtown can revolutionize public transportation. Photo by Steven Vance.
A model that optimizes signal timing at intersections can decrease air pollution. Photo by thisisbossi.