GB20072-2024
The requirements of safety in the event of rear-end collision for passenger car
乘用车后碰撞安全要求
GB 20072-2024 is an upcoming mandatory Chinese national standard for The requirements of safety in the event of rear-end collision for passenger car. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jul 1, 2026.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to M1 category vehicles (passenger cars). It specifies the general and technical requirements for vehicle safety during and after a rear-end collision. It is mandatory for all new type approvals of passenger cars entering the Chinese market. The standard covers both traditional internal combustion engine vehicles and electric/hybrid vehicles.
Technical requirements
The standard outlines comprehensive safety requirements for passenger cars subjected to rear-end collisions. Key areas include: - Fuel System Integrity: The fuel supply system must not leak during the crash. Post-crash continuous liquid leakage must not exceed 30g/min in the first 5 minutes. - Electrical and REESS Safety: For EVs and HEVs with B-level voltage circuits, the high-voltage system and Rechargeable Electrical Energy Storage System (REESS) must comply with electrical safety, electrolyte leakage, and REESS safety requirements as per GB/T 31498-2021. - Door and Occupant Protection: Doors must not open during the crash and must be unlocked afterward. At least one door per row must be openable without tools post-crash. Interior components must not have sharp protrusions, and seats must remain secured. - Fire and Warning Systems: The vehicle must not catch fire during or within 30 minutes after the crash. The hazard warning lights must automatically activate post-collision.
Testing methods
The standard mandates a rear-end collision test using a rigid moving barrier driven by external power. The barrier, weighing 1400 kg ± 20 kg, strikes the stationary test vehicle at a speed of 50 km/h ± 1 km/h. The test vehicle is prepared with a Hybrid III 50th percentile male dummy in the driver's seat, and for EVs, the REESS is charged to maximum capacity. The test evaluates structural integrity, fluid leakage, and electrical safety post-impact.
FAQs
What products are regulated under GB 20072-2024?
GB 20072-2024 applies to M1 category vehicles, which includes passenger cars. It covers both traditional fuel vehicles and electric/hybrid vehicles.
What are the main updates in GB 20072-2024 compared to the 2006 version?
The 2024 version introduces new requirements for electric and hybrid vehicles, including REESS safety. It also adds post-crash requirements for doors, interior components, and the automatic activation of hazard warning lights. The pendulum test method was removed, and the moving barrier test was updated.
How does GB 20072-2024 address electric vehicle safety?
For vehicles with B-level voltage circuits, the standard requires compliance with GB/T 31498-2021 for protection against electric shock, electrolyte leakage, and REESS safety after a rear-end collision.
The summary above provides a high-level overview of GB 20072-2024. To ensure complete compliance for your passenger cars entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 20072-2024 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- T09
- ICS
- 43.020
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- National Technical Committee on Automobiles of Standardization Administration of China
Relationships
Replaces:GB 20072-2006 (Current)