This report documents work performed under FTA's Advance Public Transportation Systems (APTS) Program, a program structured to undertake research and development of innovative applications of advanced navigation, information, and communication technologies that most benefit public transportation. This report presents the results of an analysis conducted by the Volpe Center, for the FTA, to provide an "order-of-magnitude" estimate of the expected benefits to the transit industry with the application of APTS technologies. Specifically, the study identified and quantified the major benefits derived from current applications of APTS technologies within the transit industry and projected current APTS benefits to a national level based on forecasts and reasonable assumptions on the potential future applications of such technologies within the transit industry