Polly Trottenberg

Portland (top city in 2012)? Minneapolis (top city in 2010)? No, it's the Big Apple! New York City leaped from #7 in 2012 to the top spot this year for cities with populations of 100,000 or greater.
Sep 8, 2014   StreetsBlog NYC
Mayor-elect Bill de Blasio has announced that Polly Trottenberg, the third-ranking official at the US Department of Transportation, will become the next Commissioner of the New York City Department of Transportation. She's got big shoes to fill.
Jan 1, 2014   WNYC: Transportation Nation