On Nov. 6th 2021, Vietnam Hanoi Rail Transit Line 2A (Cat Linh-Ha Dong Line, hereinafter referred to as “Line 2A”) starts revenue service. The Line 2A adopts TCT I-CBTC signaling system that conforms to China standard and supports interline operation. The commercial operation of Line 2A is of great significance to improve the efficiency of Hanoi's urban traffic network, relieve traffic pressure, drive tourism industry and promote regional economic development.

November 3, 2021, the signing ceremony for strategic cooperation between China Civil Engineering Construction Corporation (CCECC) and Traffic Control Technology Co., Ltd. (“TCT”) kicked off grandly at TCT Building. Liu Weimin, CCECC's Party Committee Secretary/Chairman, Hu Shezhong, Deputy General Manager/Chief Engineer, Liu Dong, Deputy General Manager, Gao Chunhai, Chairman of TCT, and Wang Wei Senior Vice President and Rotating CEO, attended to witness the signing ceremony.

On September 25, 2021, the 2020 Beijing Science and Technology Progress Award was announced at the plenary session of Zhongguancun Forum. 14 scientists and 150 achievements were awarded. Among them, the "Research and Application of Complete Sets of Equipment for Rail Transit Interruption-free Upgrading Based on Different Signal Systems" (hereinafter referred to as "Interruption-free Upgrading") jointly tackled by TCT, Beijing subway Limited., and Beijing Jiaotong University won the 2020 Beijing Science and Technology Award - Science and Technology Progress Award First Prize.