The headline pretty much says it – New Orleans is requiring porous pavement for all new commercial parking lots. This is a pretty old technology that U.S. construction companies are still not very familiar with, so they think it is new, expensive, difficult, and unproven. Well, it is expensive and difficult when done only on a very small scale, so requiring it across the board will solve that problem. And it is proven to work when installed by contractors and construction managers that know what they are doing, and proven not to work when they don’t. So requiring it across the board will solve that too. Notice there is nothing here about requiring it on streets or highways. Well, one step at a time.