Signaling System Transformation Scheme of Shanghai Rail Transit Line 2

Shanghai Rail Transit Line 2 is under heavy operating capacity pressure, it is necessary to reconstruct the signaling system of the line, adding CBTC (communicationbased train control), taking TBTC as backup system. In order to avoid the excessive impact of the transformation on operations, on the basis of referring to signaling overhaul and reconstruction experience of Shanghai Rail Transit Line 1, practical implementation scheme of Line 2 signaling system reconstruction is elaborated, including technical plan, signal reverse connection plan, and postoverhaul CBTC channeling plan, ensuring successful practice of Line 2 signaling reconstruction overall.