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China Issues Mandatory L2 Driver-Assist Safety Standard

The rule raises technical and driver-monitoring requirements, defines new on-road and lab test methods for verifying L2 systems.

Overview

  • China’s Ministry of Industry and Information Technology has published a mandatory national standard that tightens requirements for level‑2 combined driver‑assist systems and will require manufacturers to meet defined verification methods.
  • The standard expands rules on system operation, driver state monitoring, user notification and adds specified field‑test scenarios and test methods to reflect China’s complex road conditions.
  • BYD said it was a principal drafter of the standard and publicly stated that its Tianshen Eye systems already perform above the new requirements, a company claim that has not been independently verified in the reporting provided.
  • BYD also reported that its fleet of assisted‑driving vehicles exceeds 3.15 million and that Tianshen Eye generates more than 200 million vehicle‑kilometres of driving data per day, which the company says it uses with cloud world models and generative AI to train algorithms.
  • Automakers and suppliers will need to align engineering, testing and certification to the new rules before enforcement, a shift that could change product timelines, lab and field testing practices, and how firms use fleet data to justify safety performance.