##Chinese Standard on Vehicle Braking System Technology Requirements and Test Methods to be Implemented in 2026 A new standard published by the Ministry of Industry and Information Technology (MIIT) in China will come into effect on January 1, 2026. The updated "GB 21670-2025" replaces the old version that had been in place since 2008.

The revisions to the standard are guided by the rapidly evolving automotive industry, with multiple changes to vehicle braking system technologies. One key addition is the requirement for electric regenerative braking systems on certain vehicles.

The new standard specifies additional requirements for vehicle braking systems, particularly those featuring electric regenerative braking systems. Specifically:

• Vehicles equipped with only A-type or both A-type and B-type electric regenerative braking systems must allow drivers to control the amount of energy used in regenerative braking.
• Drivers should not use electric regenerative braking to slow down the vehicle unless they release the accelerator pedal.

In an effort to reduce risks related to incorrect operation, single-pedal braking has been specified as a requirement for standard compliance on A-type and B-type vehicles. This is aimed at preventing overuse of the regenerative braking system.

Additionally, the revised standard also updates procedures for evaluating and reducing wear on brake discs or drums:

1] Incomplete evaluation of the degree of wear is forbidden. 2] The assessment method of wear level of wheels or brake disc drum are explicitly stated.

According to industry experts, ongoing advancements in vehicle electrification and smart technologies have triggered significant changes to braking system structures. As a result, the standard has been amended to better guide and regulate developments in this field, ultimately contributing to improved performance and efficiency throughout the automotive industry, while ensuring customer safety and reliability.