This report summarizes a national scenario planning peer exchange jointly sponsored by the Federal Highway Administration (FHWA) and the Federal Transit Administration (FTA). The exchange was held as part of the Transportation Research Board (TRB) Summer Meeting in Irvine, California, on July 8-10, 2012. FHWA and FTA worked closely with the American Association of State Highway and Transportation Officials (AASHTO), the American Public Transportation Association (APTA), the National Association of Development Organizations (NADO), and the Association of Metropolitan Planning Organizations (AMPO) to plan the peer exchange.