China Issues Mandatory Safety Standard for Level 3 and Level 4 Autonomous Driving

China's Ministry of Industry and Information Technology has formally announced the publication of a mandatory national standard, GB 44721—2026, governing safety requirements for Level 3 and Level 4 autonomous driving systems. Approved on July 30, 2026, and scheduled for implementation on July 1, 2027, the standard establishes rigid legal baselines across four dimensions: enterprise lifecycle safety assurance, dynamic driving task execution, human-machine interaction, and validation testing. It applies strictly to M-class and N-class vehicles equipped with L3 and L4 technologies, while explicitly excluding automated parking systems.

The transition from voluntary guidelines to a mandatory national standard creates a hard legal baseline for commercializing advanced autonomous driving in China. By removing ambiguity surrounding safety criteria and liability boundaries, the rule forces automakers to shift their competitive focus from marketing feature lists toward robust vehicle safety engineering and regulatory compliance.

China has formally established its first mandatory national safety standard for Level 3 (L3) and Level 4 (L4) autonomous driving systems, setting a rigid legal baseline for automated vehicles on public roads. The standard, designated GB 44721—2026 and approved on July 30, 2026, by the State Administration for Market Regulation and the Standardization Administration, is scheduled to take full effect on July 1, 2027, according to the Ministry of Industry and Information Technology (MIIT). The regulation covers M-class passenger vehicles and N-class commercial trucks equipped with conditional or highly automated driving systems, while explicitly excluding automated parking systems. Its framework is structured around four primary pillars: instituting lifecycle safety mechanisms for automakers, enforcing dynamic driving task execution capabilities, standardizing human-machine interaction and user notification protocols, and establishing comprehensive testing and validation methods. Under the standard, automakers must conduct extensive simulation, proving-ground, and open-road testing during the R&D process. A key focus of the new standard is differentiating regulatory oversight based on automation levels. For L3 systems, where driver intervention may be required, vehicles must feature mandatory monitoring of the driver's capability to take over control. Furthermore, clear visual or auditory cues must indicate system status, including standby, activation, and deactivation states. For L4 systems, where automated systems handle fallback scenarios, the emphasis shifts to the vehicle's autonomous risk-mitigation capabilities. Manufacturers are also required to explicitly inform users of technological limits and responsibility boundaries to prevent misuse. The standard aligns with international benchmarks, following the approval of the United Nations Global Technical Regulation on Autonomous Driving Systems (ADS GTR)—a project led by China—in June 2026. However, domestic regulators emphasized that GB 44721—2026 provides more granular technical specifications and standardized testing scenarios tailored to China's specific road conditions. Moving forward, MIIT plans to introduce detailed supporting measures, including standardized testing methodologies and safety event data interaction frameworks, to support the transition ahead of the 2027 compliance deadline.