This standard specifies the technical requirements and test methods for braking systems of commercial vehicles and trailers. This standard applies to M2, M3 and N motor vehicles and O trailers specified in GB/T 15089. This standard does not apply to the following vehicles: -- vehicles whose design speed does not exceed 25 km/h; -- trailers that cannot be coupled with motor vehicles whose design speed exceeds 25 km/h.
GB 12676-2014 Referenced Document
GB/T 13594-2003 Antilock braking performance and test procedure for motor vehicles and their trailers
GB/T 15089 Classification of power-driven vehicles and trailers
GB/T 20716.1 Road vehicles Connectors for the electrical connection of towing and towed vehicles Part 1: Connectors for braking systems and running gears of vehicles with 24V nominal supply voltage
GB/T 20716.2 Road vehicles Connectors for the electrical connection of towing and towed vehicles Part 2: Connectors for braking systems and running gears of vehicles with 12V nominal supply voltage
GB/T 3730.1 Terms and definitions of motor vehicles,trailers and combination vehicle— Part 1:Types*, 2022-12-30 Update
GB/T 3730.2 Road vehicle--Masses--Vocabulary and codes
GB/T 5345 Road vehicles—Labelling of containers for petroleum-based or non-petroleum-based brake fluid*, 2019-10-18 Update
GB/T 5620 Road vehicles—Vocabulary and difinition for braking of automotive vehicles and their trailers*, 2020-09-29 Update
GB/T 5922 Motor vehicles and towed vehicles.Pressure test connection for compressed-air pneumatic braking equipment
ISO 11992-1 Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles — Part 1: Physical and data-link layers*, 2019-05-02 Update
ISO 11992-2:2003 Road vehicles - Interchange of digital information on electrical connections between towing and towed vehicles - Part 2: Application layer for brakes and running gear
GB 12676-2014 history
2014GB 12676-2014 Technical requirements and testing methods for commercial vehicle and trailer braking systems
1999GB 12676-1999 Road vehicle--Braking systems--Structure, performance and test methods