Standard No.:	GB 30677-2026
English Name:	Performance requirements and testing methods for electronic stability control system(ESC) for light-duty vehicles
Chinese Name:	轻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 30677-2014 Performance requirements and testing methods for electronic stability control system(ESC) for light vehicles
Target Language:	English
File Format:	PDF
Word Count:	14500 words
Translation Price(USD):	435.0
Delivery:	via email in 1~5 business day

GB 30677-2026 Performance requirements and testing methods for electronic stability control system(ESC) for light-duty vehicles English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS CCS National Standard of the People's Republic of China ‌GB 30677-2026 Performance requirements and testing methods for electronic stability control system(ESC) for light-duty vehicles 轻型汽车电子稳定性控制系统性能要求及试验方法 Issue date: 2026-06-27 Implementation date: 2027-05-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Performance requirements 6 Test conditions 7 Test methods 8 ESC system technical documentation 9 Same-type determination 10 Implementation of the standard Annex A (normative) Functional safety requirements for electronic stability control systems for light vehicles Annex B (normative) Functional safety description requirements for electronic stability control systems for light vehicles Bibliography Light vehicles — Electronic stability control systems — Performance requirements and test methods 1 Scope This document specifies the general requirements, performance requirements and test conditions for electronic stability control systems for light vehicles, and describes the corresponding test methods. This document is applicable to electronic stability control systems for M₁ and N₁ class vehicles as defined in GB/T 15089. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 12549-2013, Terms and definitions for vehicle handling and stability GB/T 15089, Classification of motor vehicles and trailers GB 21670-2025, Technical requirements and test methods for braking systems of passenger vehicles GB/T 26987-2011, Road vehicles — Measurement of pavement friction characteristics GB/T 34590 (all parts), Road vehicles — Functional safety 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 12549-2013 and GB 21670-2025, as well as the following, apply. 3.1 Ackerman steer angle (δ_A) The arctangent of the ratio of the wheelbase to the low-speed turning radius. [Source: GB/T 12549-2013, 3.1.6, modified] 3.2 electronic stability control system (ESC) An active safety system that monitors the vehicle's operating status in real time and adjusts braking forces and engine/drive motor torque as needed to change the vehicle's yaw moment and/or lateral acceleration, enabling the vehicle to follow the driver's intended path. Note: The basic characteristics of this system are as follows: a) It is capable of independently controlling the brake torque on the left and right wheels of at least one axle or axle group based on an estimation comparing the actual vehicle state with the driver's intended vehicle state, generating a yaw moment to improve vehicle stability; b) Based on the estimation comparing the actual vehicle state with the driver's intended vehicle state, it uses on-board computer closed-loop control to limit oversteer and understeer; c) It is capable of directly measuring the vehicle's yaw rate and estimating the sideslip angle or its rate of change over time; d) It is capable of monitoring the driver's steering input; e) Its algorithm is capable of determining whether it is necessary and, when required, adjusting the vehicle's drive torque to assist the driver in maintaining vehicle control. 3.3 sideslip angle The arctangent of the ratio of lateral velocity to longitudinal velocity at the vehicle's centre of mass. 3.4 yaw rate The rate of change of the vehicle's heading angle, i.e., the angular rotation per unit time about the vertical axis through the vehicle's centre of mass. 3.5 lateral acceleration The component of the vehicle's acceleration vector in a plane perpendicular to the vehicle's X-axis (longitudinal axis) and parallel to the road surface. 3.6 peak braking coefficient (PBC); peak friction coefficient (PFC) The measured value of the friction coefficient between the tyre and the road surface that can produce maximum deceleration under rolling conditions. 3.7 common space An area where two or more information functions (e.g., symbols) can be displayed asynchronously. [Source: GB 4094-2016, 3.6] 3.8 static stability factor (SSF) A geometric parameter characterising the static stability characteristics of a vehicle. 4 General requirements The ESC shall have the following functions: a) It shall be capable of independently applying brake torque to all wheels according to a control logic. b) It shall operate normally throughout all driving phases, including acceleration, coasting and deceleration (including braking), except in the following situations: The system self-check has been completed and the vehicle has been in the drive state specified in 7.8.2 for no more than 2 min; The vehicle is reversing. c) It shall not affect the normal operation of the ESC even when the anti-lock braking system (ABS) or traction control system (TCS) is active. 5 Performance requirements 5.1 Directional stability and response characteristics 5.1.1 Under ESC operating conditions, when tested according to the test conditions specified in Clause 6 and the test methods specified in 7.7.3 to 7.7.7, the vehicle shall meet the directional stability requirements specified in 5.1.2 and 5.1.3. In addition, for each test, when the input steering wheel angle is greater than or equal to 5A (where A is the reference steering wheel angle determined in 7.6) but not greater than the limit value specified in 7.7.6, the vehicle shall also meet the response characteristic requirement specified in 5.1.4. When the input steering wheel angle is less than 5A but reaches the limit value specified in 7.7.6, a system that meets the lateral displacement requirement specified in 5.1.4 shall be deemed to have met the requirements. 5.1.2 The yaw rate measured at 1 s after completion of the sine-with-dwell steering input (T₀ + 1 in Figure 1) shall not exceed 35 % of the first yaw rate peak (ψ_peak in Figure 1) recorded after the steering wheel angle direction change (between the first and second peaks). 5.1.3 The yaw rate measured at 1.75 s after completion of the sine-with-dwell steering input shall not exceed 20 % of the first yaw rate peak (ψ_peak in Figure 1) recorded after the steering wheel angle direction change (between the first and second peaks) in that test. 5.1.4 At 1.07 s after the beginning of steering (BOS), the lateral displacement (DL) of the vehicle centre of mass relative to its initial straight-line trajectory shall not be less than 1.83 m for vehicles with a maximum design total mass not greater than 3,500 kg, and shall not be less than 1.52 m for vehicles with a maximum design total mass greater than 3,500 kg. The beginning of steering (BOS) shall be determined in accordance with 7.9.7. 5.1.5 The lateral displacement (DL) shall be calculated in accordance with Formula (1), with the integration starting from the instant of steering initiation, i.e., using the beginning of steering (BOS) as the integration start point, or measured by global navigation satellite system (GNSS). 5.2 ESC fault monitoring 5.2.1 The vehicle shall be equipped with an ESC malfunction tell-tale device that alerts the driver when any fault affecting ESC control, signal generation or transmission occurs. 5.2.2 The ESC malfunction tell-tale device shall meet the following requirements: a) It shall be located within the driver's forward field of view, allowing the driver to check the tell-tale status from the driving position; b) It shall use the "ESC malfunction" symbol shown in Figure 2 or the text "ESC" for indication; c) It shall be upright when viewed during vehicle operation; d) It shall be yellow or amber in colour; e) The tell-tale shall be bright and conspicuous when illuminated, enabling the driver to clearly recognise it under both daytime and nighttime driving conditions after adapting to the ambient road lighting conditions;