As part of GAO's High-Risk series, Kate Siggerud, Managing Director for Physical Infrastructure, describes why GAO put the nation's surface transportation system on its list of programs at high risk for waste, fraud,...

As part of GAO's High-Risk series, Kate Siggerud, Managing Director for Physical Infrastructure, describes why GAO put the nation's surface transportation system on its list of programs at high risk for waste, fraud, abuse or mismanagement.