Recently, the quality supervision department has released new guidelines on local standards for the technical requirements of safety protection in urban rail transit systems. These updates emphasize the importance of enhanced security measures across various critical areas, including station entrances and exits, platform floors, and public access corridors. According to the new rules, video surveillance systems are now mandatory in these locations. Additionally, congestion detection devices must be installed on the platform level to monitor crowd density and improve emergency response capabilities.
The standard also highlights the unique challenges faced by Beijing’s urban rail transit system, which is considered a high-speed, relatively closed transport network. Due to its large passenger capacity and limited access points, the system relies heavily on its ventilation infrastructure, making it essential to implement strict safety protocols. This new regulation covers six key components of the video security monitoring subsystem, including the detection and management of hazardous materials like radioactive substances, weapons, and explosives. It serves as a technical foundation for both the construction of new lines and the renovation of existing ones.
To better manage risk, stations are categorized into four levels based on their hourly passenger flow. Stations with over 30,000 passengers per hour are classified as high-risk and require special attention. Those between 20,000 and 30,000 passengers are designated as hub stations, while those with fewer than 20,000 passengers fall into lower risk categories. This classification helps authorities allocate resources more effectively and ensure that high-traffic areas receive the most comprehensive security coverage.
In addition to video surveillance, the guidelines recommend installing face recognition systems at station entrances, exits, and platforms. Passenger flow statistics facilities should also be placed at ticket gates and entry points to help manage congestion. On the platform level, the installation of congestion detection equipment is mandatory, ensuring that potential safety hazards can be identified and addressed quickly.
The video security monitoring system requires that each passenger's frontal image be captured at least three times during their entire journey through the facility. Cameras inside train carriages must cover the entire space, and cameras should also be installed at both ends of the train. The installation of onboard cameras and cabling must meet the specific requirements of the train environment to ensure reliability and performance.
Regarding platform screen doors, the height must be no less than 2 meters. All new urban rail transit systems—whether underground, on ground level, or elevated—must adopt this screen door system. Closed barriers should also be installed along surface traffic lanes, with a minimum height of 2 meters and sufficient resistance to human damage. These barriers should be designed to blend with the surrounding environment while maintaining safety and functionality.
A security post should be placed every 400 meters along the ground-level traffic lanes. Emergency alarm buttons, preferably non-self-resetting, should be installed at strategic locations on both ground and underground station platforms to enhance emergency response capabilities.
Chemical monitors are required to be installed at the respiratory belt height—between 120 cm and 170 cm above the ground. These devices should be positioned to ensure smooth air flow and prevent accidental contact. In key stations, two different types of chemical monitoring technologies are recommended, and fixed monitors should be installed in train cars as needed to detect hazardous substances effectively.
These updated safety measures aim to create a more secure and efficient urban rail transit system, ensuring the well-being of passengers and staff alike.A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable. The supporting shells are called blocks.
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