It integrates with AI, machine vision and ubiquitous perception technology to realize digitalization of rail transit operation environment and can be applied to scenarios such as intelligent detection of obstacles and unattended inspection of the machine room. In 2019, TCT’s self-developed TIDS obtained SIL2 safety certification. At present, the next-generation TIDS based on AI has been put into field test, with the core technology of “rail transit intelligent perception integrating with multiple sensors”.