T/CCTAS 241-2025 Urban rail transit train operation safety obstacle active detection system requirement specification

Scope

This standard sets out detailed provisions on the basic requirements, functional requirements, performance requirements, and test verification of active detection systems for safety obstacles in urban rail transit trains, with the aim of standardizing the design and verification of such systems. China's urban rail transit industry has become an important component of urban public transportation, and will continue to develop towards intelligence, greenness, and diversification in the future, providing urban residents with more convenient, safe, and comfortable travel options. The urgent needs for safety and intelligence in urban rail transit have drawn sustained attention and investment from various sectors, including industry, academia, and application fields, leading to the continuous emergence of new technologies. Currently, the detection of safety obstacles in train operation mainly includes two methods: passive detection and active detection. Passive detection primarily adopts the principle of contact-based collision detection, where force sensors are used to sense the static load or impact force of obstacles. When the threshold value is exceeded, an alarm and braking request are issued. This method features a simple and reliable structure of the detection device. Although it cannot avoid collisions, it can reduce the losses caused by accidents through timely deceleration and braking.

Development Information

Related Standards