成人快手

Stockholm鈥檚 streets are among the safest in the world鈥攂ut some of its innovations might seem extreme. Drivers in the city typically travel under 20 miles per hour. Still, the Swedish capital has such low statistics for pedestrian and cyclist deaths that American cities, like Boston, are following in Stockholm鈥檚 footsteps.

Image: A roundabout in Stockholm, Sweden. Credit: Jason Margolis