Standard No.:	GB 38185-2026
English Name:	Performance requirements and testing methods for electronic stability control system (ESC) for heavy-duty vehicles
Chinese Name:	重型汽车电子稳定性控制系统性能要求及试验方法
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR, SAC
Issued on:	2026-07-30
Implemented on:	2028-1-1
Status:	to be valid
Superseding:	GB/T 38185-2019 Performance requirements and testing methods for electronic stability control system(ESC)for commercial vehicles
Target Language:	English
File Format:	PDF
Word Count:	14500 words
Translation Price(USD):	435.0
Delivery:	via email in 1~3 business day

ICS 43.040.40 T 24 National Standard of the People’s Republic of China GB/T 38185-2026 Replaces GB/T 38185-2019 Performance requirements and testing methods for electronic stability control system (ESC) for heavy-duty vehicles 重型汽车电子稳定性控制系统性能要求及试验方法 (English Translation) Issue date: 2026-07-30 Implementation date: 2028-01-01 Issued by the State Administration for Market Regulation the Standardization Administration of the People’s Republic of China Performance requirements and testing methods for electronic stability control system (ESC) for heavy-duty vehicles 1 Scope This standard specifies the terms and definitions, general requirements, performance requirements, test conditions and test methods of electronic stability control system (ESC) for commercial vehicles. This standard is applicable to M2 vehicles with the maximum design total mass greater than 3,500 kg and M3, N2, N3 vehicles, all of which are equipped with ESC. Note: ESC as the abbreviation of electronic stability control system is used below. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 12428 Laden mass calculating method for buses GB/T 12549 Terms and definitions for vehicle controllability and stability GB 12676 Technical requirements and testing methods for commercial vehicle and trailer braking systems GB/T 13594-2025 Performance requirements and test methods of anti-lock braking system for commercial vehicle and trailer GB/T 15089 Classification of power-driven vehicles and trailers GB/T 17350 Classification, name and model compilation method for special motor vehicles and special trailers GB/T 26987-2011 Road vehicles - Measurement of roadsurface friction GB/T 30677 Performance requirements and testing methods for electronic stability control system(ESC) for light vehicles GB/T 34590 (All parts) Road vehicles—Functional safety 3 Terms and definitions For the purposes of this document, the terms and definitions specified in GB/T 12549 and GB/T 30677 and the following apply. 3.1 ESC braking situation that ESC issues an instruction to apply a brake to any wheel for a period of at least 0.5s and a pressure of at least 34 kPa (pneumatic braking system) or 172 kPa (hydraulic braking system) 4 General requirements The ESC shall have the following functions: a) Apply braking torque separately to all wheels according to certain control logic [1) Indirect control wheels and direct control wheels in the same group are regarded as the same wheel.]1); b) Operate normally in all stages of driving, such as acceleration, coasting and deceleration (including braking), except in the following cases: 1) The driver turns off the ESC; 2) The speed is lower than 20 km/h; 3) The system self-test has been completed and the vehicle is in the driving state specified in 7.8.2 for not more than 2 min; 4) The vehicle is in a back state; c) The normal operation of the ESC shall not be affected even during the action of the anti-lock braking system (ABS) or the drive anti-skid system (ASR). 5 Performance requirements 5.1 Test of J steering 5.1.1 Test is carried out according to 7.7.2, and the following requirements shall be met at least 2 times in 4 consecutive tests in each series: a) ESC shall reduce the engine/drive motor output torque by 10% or more than the driver's request torque for at least 0.5s after the vehicle under test enters the test starting point for 1.5s and passes the test ending point; b) The wheels of the vehicle under test shall remain in the test lane at all times from the beginning of the test to the end of the test. 5.1.2 Test is carried out according to 7.7.3, and the following requirements shall be met at least 6 times in 8 consecutive tests in each series:

Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Performance requirements 6 Test conditions 7 Test methods 8 Determination of the same type 9 Implementation of the standard Annex A (normative) Functional safety requirements for electronic stability control systems of heavy-duty vehicles Annex B (normative) Functional safety description requirements for electronic stability control systems of heavy-duty vehicles