As a wholly-owned subsidiary of CRRC Times Electric, Hunan CRRC Times Communication And Signal Co.,, Ltd. (abbr. CRRC TCS) recently won its first big CBTC signaling system order from Changsha Metro Line 4, with order amount around 300 million RMB. This CBTC (Communication Based Train Control System) signaling system is developed by CRRC TCS who attains independent intellectual property rights. A very few companies in the world have perfect mastery of this technology in railway industry. CRRC TCS is also the only research and production center in communication and signal industry under CRRC Group.

CBTC signaling system consists of lots of subsystems including computer interlock, automatic train supervision, automatic train protection, automatic train operation, data communication, maintenance support etc.