The TSC is delighted to announce that Chengdu Metro and Chongqing Rail Transit, both based in China, officially joined the COMET community in March.
Chengdu Metro began operations in 2010 and has grown impressively to over 600 kilometres in just 15 years, making it the 4th largest metro in the world by total network length, following Shanghai, Guangzhou, and Beijing. The system is known for its modern design, with clear digital signage and passenger information systems. It serves an average of 3.5 million passengers daily.

Chongqing Rail Transit operates 12 lines covering more than 550 kilometres. The network includes two high-capacity monorail lines—Lines 2 and 3—which are the longest and busiest monorail lines globally. Their system also features the world’s deepest metro station, located 116 metres underground, showcasing the city’s unique topography and engineering innovation.

We warmly welcome Chengdu and Chongqing to the group and look forward to their contributions to our global metro benchmarking and knowledge-sharing community.