The Alameda-Contra Costa Transit District (AC Transit) has been operating three fuel cell buses in revenue service since March 20, 2006. This operation has been documented in previous evaluation reports from the U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory (NREL). This report continues the evaluation at AC Transit; however, the funding for NRELs data collection and analysis has been transitioned from DOE to the Federal Transit Administration (FTA). Specifically, this report provides results of AC Transits accelerated testing of its existing three fuel cell buses as part of FTAs National Fuel Cell Bus Program (NFCBP). The accelerated testing results in this report include operation from November 2007 through October 2008 for the fuel cell buses with a focus on fuel cell bus operations from the last installation of new fuel cell power systems through October 2008. The diesel bus evaluation results are from January 2007 through December 2007.