China Mandates Blind Spot Radars for All Exported Passenger Cars and Light Trucks

On May 25, 2026, GB/T 39901-2026 — Technical Requirements for Automotive Automatic Emergency Braking Systems — entered into force as a mandatory national standard. This regulation requires all passenger vehicles and N1-class light commercial vehicles exported to the Chinese market to be equipped with blind spot radar systems compliant with UN ECE Regulation No. 152. The standard has also been adopted by Saudi Arabia’s GSO and the UAE’s ESMA as a basis for mandatory import certification. Exporters, Tier-1 suppliers, and automotive compliance service providers should treat this as a high-priority regulatory shift affecting product configuration, certification pathways, and regional market access.

Event Overview

GB/T 39901-2026 became effective on May 25, 2026. It mandates that all passenger cars and N1-class light commercial vehicles destined for the Chinese market must be factory-fitted with blind spot radar systems integrated into their Automatic Emergency Braking (AEBS) architecture, meeting the technical requirements of UN ECE R152. The standard is referenced by Saudi GSO and UAE ESMA for import conformity assessment — confirming its cross-border regulatory weight.

Industries Affected

Direct Exporters (OEMs and CKD/SKD Assemblers)
Exporters supplying vehicles to China — including those operating via local joint ventures or wholly owned subsidiaries — must now ensure full vehicle-level AEBS integration with certified blind spot radars prior to customs clearance. Non-compliant units risk rejection at port or failure in type approval testing conducted by CNAS-accredited labs.

Automotive Component Suppliers (Tier-1 Radar & ADAS Integrators)
Suppliers providing radar modules or AEBS control units face revised technical validation requirements. Products must demonstrate conformance not only to ECE R152 but also to the specific test protocols and documentation formats stipulated in GB/T 39901-2026 — including environmental robustness, field-of-view verification, and interference immunity under Chinese road conditions.

Certification & Compliance Service Providers
Firms offering homologation support for China or Gulf markets must update their audit checklists and test plans to include blind spot radar functionality within AEBS scope. Certification timelines may extend due to additional sensor-level validation steps and cross-referencing with both GB/T and ECE R152 test reports.

Key Considerations and Recommended Actions

Monitor official interpretations and implementation guidance

The China Automotive Technology and Research Center (CATARC) and the Standardization Administration of China (SAC) may issue supplementary notices clarifying transitional arrangements, grandfathering clauses for existing approvals, or exceptions for low-volume specialty vehicles. These documents will determine whether current certifications remain valid beyond May 2026.

Verify applicability across vehicle variants and production batches

Manufacturers should confirm whether the mandate applies uniformly across all trim levels, body styles, and powertrain configurations — especially for models where blind spot radar was previously optional or bundled with higher-end packages. Retrofitting post-production is not permitted under the standard’s ‘factory-fitted’ requirement.

Distinguish between regulatory adoption and operational enforcement

While GSO and ESMA have formally cited GB/T 39901-2026, actual enforcement timelines in those jurisdictions may differ. Observably, UAE authorities have indicated phased implementation starting Q4 2026; Saudi GSO has not yet published an enforcement schedule. Companies should track each authority’s official bulletins separately rather than assume synchronized rollout.

Update procurement and supply chain coordination protocols

Procurement teams must revise supplier agreements to require ECE R152-compliant blind spot radar components with full traceability documentation (including test reports, calibration certificates, and software version logs). Lead times for qualified radar modules may tighten as demand rises — early engagement with Tier-1 suppliers is advisable.

Editorial Perspective / Industry Observation

Analysis shows this mandate signals a structural tightening of ADAS-related market access — moving beyond functional performance to enforce specific sensor architectures. It is less a standalone technical update and more a policy lever aligning China’s regulatory framework with global UNECE harmonization efforts, while simultaneously reinforcing domestic testing and certification sovereignty. From an industry perspective, the concurrent referencing by Gulf regulators suggests coordinated regulatory influence rather than isolated national action. Current enforcement remains focused on new type approvals; however, ongoing monitoring is warranted as surveillance of in-market vehicles could expand in subsequent revisions.

Conclusion
This regulation marks a definitive step toward sensor-level standardization in vehicle safety systems for key export markets. Its immediate impact lies not in technological novelty — blind spot radars are widely deployed — but in the binding linkage between radar specification, system integration, and regulatory acceptance. For stakeholders, it is best understood not as an emergency trigger, but as a calibrated recalibration of baseline compliance expectations across multiple jurisdictions.

Information Sources
Primary source: GB/T 39901-2026, issued by the Standardization Administration of China (SAC), effective May 25, 2026.
Secondary references: Official announcements from Saudi Standards, Metrology and Quality Organization (GSO) and Emirates Authority for Standardization and Metrology (ESMA), confirming citation of GB/T 39901-2026 in import conformity frameworks.
Note: Enforcement schedules and transitional provisions outside China remain subject to official updates from GSO and ESMA and are currently under observation.