Antananarivo, Madagascar. Unlike the centrally planned superblocks of Barcelona, those in the developing world emerge in a more piecemeal, bottom-up manner, responding to the needs of micro locales ...

The plan to largely eliminate car traffic from nine-block squares of the Spanish city means more pleasant local streets, but makes some car trips take longer. Not everyone is happy. Barcelona’s ...

Barcelona’s innovative Superblocks, perhaps the best urban traffic-reduction plan in recent years, are drawing criticism from regular citizens. Not surprisingly, the whiners are drivers, and their ...