GB26512-2021
The protection of the occupants of the cab of commercial vehicles
商用车驾驶室乘员保护
GB 26512-2021 is a current mandatory Chinese national standard for The protection of the occupants of the cab of commercial vehicles. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jan 1, 2022.
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 specifies the protection requirements and testing methods for occupants of commercial vehicle cabs. It applies to Category N vehicles (motor vehicles designed for carrying goods). It is mandatory for manufacturers of commercial vehicles entering the Chinese market. The standard outlines specific test requirements based on vehicle categories, such as N1, N2, and N3 vehicles, with distinct criteria for vehicles with a total mass exceeding 7500 kg. It does not apply to passenger cars (M1 category) unless they are derived into N1 category vehicles.
Technical requirements
The standard establishes general design requirements to minimize injury risks to cab occupants during accidents. Manufacturers must ensure the cab maintains a survivable space after impact tests. This involves verifying that a specified manikin, as detailed in Annex A, does not contact non-elastic parts of the vehicle with a Shore A hardness of 50 or more. For N1 and certain N2 vehicles (total mass ≤ 7500 kg), compliance requires passing Test A (frontal impact), Test C (roof strength), and Test D (rear wall strength). Vehicles meeting the frontal collision requirements of GB 11551 or GB/T 20913 may be exempt from Test A. Test C and Test D are only conducted on vehicles with separate cabs. For N3 vehicles and N2 vehicles with a total mass > 7500 kg, compliance requires passing Test A, Test B (A-pillar impact), Test C, and Test D. Test A is exclusively performed on cab-over-engine vehicles. Manufacturers may use computer simulation or calculation to prove compliance instead of physical testing, provided the methods meet the standard's conditions. During testing, the cab must remain connected to the frame, although deformation of mounting components is permitted. Doors must not open during the tests. The standard also defines the specific impact energies and loading conditions for each test scenario.
Testing methods
The standard defines four primary testing methods: Test A (Frontal Impact Test) uses a pendulum impactor to strike the front of the cab with specific energy levels (29.4 kJ or 55 kJ depending on vehicle category). Test B (A-pillar Impact Test) involves a cylindrical impactor striking the A-pillars with an energy of 29.4 kJ. Test C (Roof Strength Test) includes a dynamic pre-loading phase (for heavier vehicles) followed by a static load application equivalent to the maximum allowable front axle load (up to 98 kN). Test D (Rear Wall Strength Test) applies a static load to the rear wall using a rigid barrier. Detailed procedures for vehicle fixation on the test bench are specified in Annex C.
FAQs
What products are regulated under GB 26512-2021?
GB 26512-2021 regulates the occupant protection of commercial vehicle cabs, specifically applying to Category N vehicles (goods vehicles), including N1, N2, and N3 categories.
Are there any updates from the previous version of GB 26512-2021?
Yes, compared to GB 26512-2011, this version modifies the test energy for the frontal impact test, adds the A-pillar impact test (Test B), and introduces a dynamic pre-loading test for N3 vehicles and N2 vehicles over 7500 kg.
Can computer simulation replace physical testing under GB 26512-2021?
Yes, manufacturers may use computer simulation or calculation to prove cab strength and compliance, provided the simulation meets the test conditions specified in the standard and demonstrates that the cab will not deform in a way that intrudes on the survival space.
The summary above provides a high-level overview of GB 26512-2021. To ensure complete compliance for your commercial vehicles entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 26512-2021 today to access all detailed parameters, impact energies, testing procedures, and annexes.
Applicability hints
- Type
- Safety
- CCS
- T26
- ICS
- 43.040
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology
Relationships
Replaces:GB 26512-2011