The D2 Subway project is a future second light rail line through downtown Dallas. DART began planning for D2 in 2007. Since then, several studies and planning efforts have been completed (see below for PROJECT HISTORY AND BACKGROUND). The most recent efforts resulted in both the Dallas City Council and the DART Board of Directors approving the D2 Subway Locally Preferred Alternative (LPA) in September 2017. The D2 Subway LPA (Commerce via Victory-Swiss) extends from Victory Park to Deep Ellum, primarily below Commerce Street through the heart of downtown Dallas.