 Recognizing these issues, the March 2011 "Dumbarton Rail Corridor Alternatives Study" (Wilbur Smith Associates) set out to redefine the project to increase cost-effectiveness and boost ridership.Several alternative service proposals were studied, including modified rail service and bus rapid transit schemes.One alternate rail service would have created a rail shuttle between Union City and the existing Redwood City Caltrain station, dropping the limited stop service to San Francisco or San Jose.