This report provides a summary of the Transit Safety Retrofit Package (TRP) Development project and its results. The report documents results of each project phase, and provides recommended next steps as well as a vision for a next generation TRP. The objectives of this project included developing, testing, installing, deploying, and maintaining TRPs on three University of Michigan transit buses, including installation of three Basic Safety Applications – Emergency Electronic Brake Lights (EEBL), Forward Collision Warning (FCW), and Curve Speed Warning (CSW), and development of two new Transit-Specific Safety Applications – Pedestrian in Signalized Crosswalk Warning (PCW) and Vehicle Turning Right in Front of Bus Warning (VTRW); participating in the USDOT’s Safety Pilot Model Deployment; and collecting and providing data from the TRP-equipped buses to the Volpe Center for an independent evaluation of results. Within the Model Deployment Connected Vehicle (CV) architecture, TRP employed Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) technologies based on Dedicated Short-Range Communication (DSRC), to ultimately determine if these technologies could be combined with the on-board transit safety applications to provide real-time alerting to the transit driver.