GB 47955-2026 Intelligent and connected vehicle—Safety requirements of combined driver assistance system
On June 27, 2026, the mandatory national standard GB 47955-2026 Intelligent and connected vehicle - Safety requirements of combined driver assistance system was approved and issued by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China. The standard, developed by and under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China (MIIT), is set to take effect on January 1, 2027.
A combined driver assistance system refers to a system that assists the driver in executing lateral and longitudinal control of the vehicle under specific operational design conditions, on the premise that the driver continuously monitors the traffic situation and maintains control of the vehicle. In recent years, a new round of technological revolution and industrial transformation has been advancing in depth, driving profound changes in the product form, usage patterns and business models of automobiles. China's intelligent and connected vehicle industry has thus entered a "window period" of rapid development. Since 2026, the market penetration rate of new passenger cars with combined driver assistance function has reached 70%, with models featuring Navigation on Autopilot (NOA) functions exceeding a 30% penetration rate. MIIT has prioritized the development of the ICV industry, establishing two editions of the technical standard system for ICVs and issuing critical and imperative standards on information security, software updates and automated driving data recording systems. Building on previously released recommended national standards for basic single-lane combined driver assistance system and basic multi-lane combined driver assistance system, etc., MIIT initiated the development of this mandatory national standard in 2024 through the National Technical Committee of Auto Standardization
GB 47955-2026 is grounded in the needs of China’s industrial development and industry supervision, while taking into account technical feasibility, product compatibility and practical operability. It puts forward a safety indicator system that features clear requirements, comprehensive dimensions and adaptation to national conditions. 1. It comprehensively accounts for different product forms and technical routes, specifying applicable safety requirements for basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system and advanced combined driver assistance system. 2. Taking into account China's road traffic characteristics, it establishes baseline safety requirements from dimensions including functional requirements, data recording, and vehicle manufacturer safety assurances to ensure the safe operation of combined driver assistance systems. 3. Recognizing the core positioning of the system as an "assistive" driving function, it establishes requirements for human-machine interaction, instructions for use and driver training to provide a fundamental guarantee for proper collaboration between the user and the system. 4. In line with the actual needs of industry management in China, it provides multi-tiered evaluation methods for proving ground tests, road tests and document inspections to comprehensively assess the system's safety capabilities.
At the international regulatory level, the United Nations World Forum for Harmonization of Vehicle Regulations (WP.29) issued the technical regulation Uniform Provisions Concerning the Approval of Vehicles with regard to Driver Control Assistance Systems (DCAS) (UN R171) in March 2024, and completed its first revision in March 2025. This regulation sets forth unified technical requirements covering functional requirements, human-machine interaction, and failure response, and also specifies supporting test and validation methods, in-service monitoring and certification procedures, etc. Compared with UN R171, GB 47955-2026 imposes more detailed technical requirements in areas such as the design operational domain of system, functional requirements, driver state monitoring and user notification. Besides, it adds several proving ground test scenarios along with corresponding test procedures and pass criteria, and clearly specifies the inspection and test methods associated with the proposed technical requirements. While maintaining alignment with the core technical content of the international regulation, it is better tailored to the complexity of China’s road traffic environment and the practical needs of industry management.
The issuance and implementation of GB 47955-2026 establish a clear and unified safety framework for combined driver assistance systems, which is of great significance for improving the safety of intelligent and connected vehicles and ensuring the healthy and sustainable development of the industry. In the next phase, MIIT will thoroughly promote and implement the standard, strengthen the approval management of intelligent and connected vehicle products, further consolidate the primary safety responsibilities of enterprises, and ensure the safe and compliant application of combined driver assistance systems. At the same time, it will accelerate the issuance and implementation of other mandatory national standards, such as those for automated driving systems, promote the establishment of a comprehensive testing and regulatory system for intelligent and connected vehicles, accelerate the industrialization of automated driving technologies, and lead the high-quality development of China’s intelligent and connected vehicle industry.
ICS 43.020
CCS T 40
National Standard of the People's Republic of China GB 47955-2026
Intelligent and connected vehicle - Safety requirements of combined driver assistance system
(English Translation)
Issue date: 2026-06-27 Implementation date: 2027-01-01
Issued by the State Administration for Market Regulation of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword II
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Safety requirements for advanced combined driver assistance system 8
5 Safety requirements for basic single-lane combined driver assistance system 19
6 Safety requirements for basic multi-lane combined driver assistance system 20
7 User notification 21
8 System disablement 22
9 Proving ground test methods 22
10 Road test methods 50
11 Determination of identical type 54
12 Implementation of the standard 57
Annex A (Normative) Cross‑reference table of clauses to proving ground tests, road tests and document inspections 59
Annex B (Normative) Credibility assessment requirements for simulation tests 64
Annex C (Normative) Functional safety and intended functional safety requirements 69
Annex D (Normative) Functional safety and intended functional safety description requirements 96
Annex E (Normative) Combined driver assistance safety assurance requirements 99
Annex F (Normative) Data recording requirements 100
Foreword
This document is drafted in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
Attention is drawn to the possibility that some content of this document may involve patents. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China.
Intelligent and connected vehicle - Safety requirements of combined driver assistance system
1 Scope
This document specifies the safety requirements and the determination of identical type for basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system, and advanced combined driver assistance system for intelligent and connected vehicle, and describes the corresponding inspection and test methods.
This document applies to M and N category vehicles equipped with basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system, or advanced combined driver assistance system.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 5768.3 Road traffic signs and markings - Part 3: Road traffic markings
GB 5768.4-2017 Road traffic signs and markings - Part 4: Work zone
GB/T 10000-2023 Human dimensions of Chinese adults
GB 11551 The protection of the occupants in the event of a frontal collision for motor vehicle
GB/T 12534 Motor vehicles - General rules of road test method
GB 16735 Road vehicles - Vehicle identification number (VIN)
GB 20071 The protection of the occupants in the event of a lateral collision
GB/T 20913 The protection of the occupant in the event of a frontal collision for passenger car
GB/T 21437.2-2021 Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 2:Electrical transient conduction along supply lines only
GB/T 21437.3-2021 Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 3 : Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
GB/T 28046.1-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 1 : General
GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads
GB/T 28650 Road safety barrel
GB/T 30038-2013 Road vehicles - Degrees of electrical equipment protection (IP-Code)
GB/T 34589-2017 Road vehicles - Diagnostic connector
GB/T 34590
(all parts) Road vehicles - Functional safety
GB 34660-XXXX Road vehicles - Requirements and test methods of electromagnetic compatibility
GB/T 34847-2017 General technical requirements of polyethylene barrier
GB 39265-2020 Road vehicles - Performance requirements and testing methods for blind spot detection (BSD) system
GB/T 39323 Performance requirement and testing method for lane keeping assist (LKA) system of passenger cars
GB 39732-2020 Vehicle event data recorder system
GB 39901 Technical requirements and testing methods for advanced emergency braking system of light-duty vehicles
GB/T 40429 Road vehicles - Diagnostic communication over controller area network (DoCAN) - Dictionary
GB/T 40822 Road vehicles - Unified diagnostic services
GB/T 41796 Performance requirements and test methods for lane keeping assist system of commercial vehicles
GB/T 43258.4 Road vehicles - Diagnostic communication over Internet Protocol (DoIP) - Part 4:Ethernet-based high-speed data link connector
GB/T 43267 Road vehicles - Safety of the intended functionality
GB/T 44461.1-2024 Intelligent and connected vehicle - Technical requirements and testing methods for combined driver assistance system - Part 1: Single-lane manoeuvre
GB/T 44461.2-2024 Intelligent and connected vehicle - Technical requirements and testing methods for combined driver assistance system - Part 2: Multi-lane manoeuvre
GB 44497-2024 Intelligent and connected vehicle - Data storage system for automated driving
GB/T 45312 Intelligent and connected vehicles - Operational design condition for automated driving system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 40429, GB/T 44461.1, GB/T 44461.2, GB/T 34590.1 as well as the following apply.
3.1
combined driver assistance system
system composed of hardware and software that, within its operational design condition, continuously performs lateral and longitudinal motion control of the vehicle as part of the dynamic driving task, and is equipped with the capability for partial object and event detection and response commensurate with the lateral and longitudinal motion control being performed
Note 1: Combined driver assistance systems are divided into four system categories: basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system ,advanced combined driver assistance system, and parking combined driver assistance system. The four categories are considered as mutually independent systems.
Note 2: Where no confusion arises, any combined driver assistance system in this document is referred to as the "system".
3.1.1
basic single-lane combined driver assistance system
combined driver assistance system that, only in the road environment of category A (3.35), continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in controlling the vehicle to travel only within a selected single lane
3.1.2
basic multi-lane combined driver assistance system
combined driver assistance system that, only in the road environment of category A (3.35), after the lane change procedure is initiated solely by the driver, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes in the same direction of travel
3.1.3
advanced combined driver assistance system
combined driver assistance system that, other than the basic single‑lane combined driver assistance system (3.1.1), basic multi‑lane combined driver assistance system (3.1.2) and parking combined driver assistance system, in the road environment of category A (3.35) and/or the road environment of category B (3.36), continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in performing some of the dynamic driving tasks
3.2
combined driver assistance function
function by which a combined driver assistance system assists the driver in performing some of the dynamic driving tasks under specific operational design conditions
Note: under the condition that no confusion arises, the "combined driver assistance function" in this document is referred to as the "function".
3.3
lane-cruise manoeuvre function
function that continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in controlling the vehicle to cruise within the visible lane boundaries
3.4
non lane-cruise manoeuvre function
function that continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in causing the vehicle to leave its current lane, at least partially, or to change its direction of travel
Note: Driver‑initiated lane change control, driver‑confirmed lane change control, system‑initiated lane change control, navigating around obstacle by lane crossing, intersection passage (e.g. straight ahead, left turn, right turn, U‑turn), and roundabout passage are all considered non lane‑cruise manoeuvre functions.
3.5
driver-initiated lane change function
function that, after the driver initiates the lane change procedure, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes
3.6
driver-confirmed lane change function
function that, after the driver confirms the system’s lane change intention, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes
3.7
system-initiated lane change function
function that, after the system release a lane change intention and the driver does not cancel it, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes
3.8
navigating around obstacle by lane crossing function
function that, when there is an obstacle or other traffic participants in the current lane that impedes the vehicle’s forward movement, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in controlling the vehicle to cross the lane boundary and, after the obstacle is cleared, return to the original lane
3.9
risk mitigation function; RMF
function that, in the event that the driver continuously fails to respond to the system’s driver disengagement prompts or warning signals, continuously performs lateral and longitudinal motion control of the vehicle for a certain period of time based on the driving environment around the vehicle, assisting the driver in parking the vehicle within a target parking area
3.10
driver disengagement
state, confirmed by the system, in which the driver is currently unable to safely perform the corresponding dynamic driving task
Note: Driver disengagement includes hand disengagement and visual disengagement.
3.11
driver’s ocular points
two points located 635 mm vertically above the R‑point of the driver’s seat, perpendicular to the vehicle longitudinal reference plane and spaced 65 mm apart
[Source: GB/T 15084 -2022, 3.25]
3.12
ocular reference point
midpoint between driver's ocular points
[Source: GB/T 15084 -2022, 3.27]
3.13
hands on request; HOR
signal used to prompt the driver to keep hands on the steering wheel
3.14
eyes on request; EOR
signal used to prompt the driver to redirect visual attention back to areas relevant to the driving task
3.15
direct control alert; DCA
warning signal used to prompt the driver to immediately regain at least lateral motion control of the vehicle
3.16
operational design domain; ODD
external environmental conditions determined during the design of the driving automation system as applicable to its functional operation
Note: Typical external environmental conditions include road, traffic, weather, lighting, etc.
[Source: GB/T 40429-2021, 2.11]
3.17
operational design condition; ODC
general term for various conditions determined during the design of the driving automation system as applicable to its functional operation, including the operational design domain, vehicle status, occupant status, and other necessary conditions
[Source: GB/T 40429-2021, 2.12]
3.18
lane
driving lane that does not require changing the travel path and is free from any fixed obstacle interference
[Source: GB/T 44461.1-2024, 3.2, modified]
3.19
lane marking
visible road traffic marking used to determine lane boundary
[Source: GB/T 44461.1-2024, 3.3]
3.20
target lane
another lane that the vehicle intends to enter
[Source: GB/T 44461.2-2024, 3.4, modified]
3.21
lane marking of target lane
common lane marking between the current lane and the target lane
[Source: GB/T 44461.2-2024, 3.2]
3.22
lane change procedure
procedure from the initiation of a lane change by the driver or system and the first activation of the turn signal, to the completion of the lane change and the automatic deactivation of the turn signal or until the system sends a lane change completion indication signal
[Source: GB/T 44461.2-2024, 3.5, modified]
3.22.1
lane change preparation phase
phase from the initiation of the lane change procedure to the point when the outer side of the front wheel closest to the target lane contacts the target lane marking on the current lane side
[Source: GB/T 44461.2-2024, 3.5.1]
3.22.2
lane change manoeuvre phase
4 Safety requirements for advanced combined driver assistance system
4.1 Overall requirements
4.1.1 The system shall be such designed that the driver continuously performs the corresponding dynamic driving task, and shall comply with the requirements of 4.8.3.
4.1.2 The system shall be designed to be capable of effectively addressing reasonably foreseeable driver misuse.
4.1.3 The system shall respond at any time to the driver’s effective override or actions to deactivate the system, and shall comply with the requirements of 4.8.1.3 and 4.8.2.
4.1.4 The system and its functions shall assist the driver in controlling the vehicle only within the operational design speed range.
4.1.5 If the system is activatable in the road environment of category A, when the system is active in the road environment of category A, the maximum speed set by the driver shall not exceed the maximum speed limit of all road environments of category A within the corresponding ODC. When tested in accordance with 9.3, the steady‑state speed of the test vehicle shall not exceed the maximum speed limit of all road environments of category A within the system’s ODC.
4.1.6 If the system is activatable in road environment of category B, when the system is active in the road environment of category B, the maximum speed set by the driver shall not exceed the maximum speed limit of all road environments of category B within the corresponding ODC. When tested in accordance with 9.3, the steady‑state speed of the test vehicle shall not exceed the maximum speed limit of all road environments of category B within the system’s ODC.
4.1.7 The system’s objectives shall comply with road traffic regulations.
Note 1: For the requirements related to “objectives shall” in this document, if the test vehicle only fails to comply with the requirements due to external factors during the road test, conformity shall be confirmed based on the documentation submitted by the vehicle manufacturer.
Note 2: If there are road traffic regulations that the system cannot address (e.g., regional traffic restriction measures, temporary road closures, etc.), the vehicle manufacturer is permitted to explain this in the system’s instructions for use in accordance with 7.2 e).
4.1.8 The system shall be designed such that its objectives enable the vehicles to adapt to surrounding traffic conditions so as to avoid disrupting normal traffic flow, and shall
a) adapt to the status of other traffic participants, and not stop or wait unnecessarily;
b) respond in a timely manner to relevant traffic control facilities in the vicinity of the vehicle;
c) not perform emergency braking or emergency steering measures unnecessarily.
4.1.9 The system shall be designed to detect and respond to other traffic participants, road infrastructure, and obstacles in the applicable road environment, so as to alert the driver to collision risks and avoid collisions. If the system can be activated in the road environment of category A or B, when tested in accordance with 9.4.6, 9.4.7, 9.4.10.2.2, and 9.4.11, the vehicle shall not collide without intervention by the test personnel. If the system can be activated in the road environment of category B, when tested in accordance with 9.5.2 and 9.5.4 to 9.5.8, the vehicle shall not collide without intervention by the test personnel. The system is permitted to comply with the requirements of this clause when interacting with other driving automation systems.
Note 1: If the system does not have a driver‑initiated lane change function, the tests in 9.4.6.1, 9.4.6.2, 9.5.5.1, and 9.5.6.1 may be ignored.
Note 2: If the system does not have a driver‑confirmed lane change function, the test in 9.4.6.3 is not required.
Note 3: If the system does not have a system‑initiated lane change function, the test in 9.4.6.4 is not required.
Note 4: If the RMF does not have lane‑change capability, the test in 9.4.10.2.2 is not required.
Note 5: If the system does not have a roundabout negotiation function, the test in 9.5.2 is not required.
Note 6: If the system does not have intersection turning capability, the tests in 9.5.4.2 and 9.5.6.3 is not required.
4.1.10 The system shall enable the vehicle to maintain a reasonable safety space with other traffic participants. If, due to the behaviour of other traffic participants (e.g., cut‑in by an adjacent vehicle, deceleration of a preceding vehicle), the vehicle is unable to maintain a reasonable safety space with the preceding vehicle, the system shall implement a reasonable control strategy to avoid or reduce the collision risk and, at an appropriate subsequent moment, re‑establish a reasonable safety space with the preceding vehicle.
4.1.11 The system shall provide the driver with clear and sufficient system status information and motion control information. Each piece of information shall be easily distinguishable and shall not cause distraction to the driver. Optical signals shall be clearly visible to the driver in the normal driving position, even during daytime.
4.1.12 The design of the system’s human‑machine interface shall not cause confusion for the driver with respect to other systems installed on the vehicle.
4.1.13 The vehicle manufacturer shall provide a description of the perception detection range relevant to the system’s functions in accordance with the requirements of Annex C.
4.1.14 The system shall have at least a lane‑cruise manoeuvre function and RMF. If the system can be activated in road environment of category B, it shall have at least an intersection passage function. If the system has a non lane‑cruise manoeuvre function, it shall comply with 4.6.2.1 and the following requirements:
a) If it has a lane change control function, it shall comply with 4.6.2.2.1 and the following requirements:
1) If it has a driver‑initiated lane change function, it shall comply with 4.6.2.2.2;
2) If it has a driver‑confirmed lane change function, it shall comply with 4.6.2.2.3;
3) If it has a system‑initiated lane change function, it shall comply with 4.6.2.2.4;
b) If it has other non lane‑cruise manoeuvre functions, it shall comply with 4.6.2.3.1 and the following requirements:
1) If it has roundabout passage and/or intersection passage functions, it shall comply with 4.6.2.3.2;
2) If it has a navigating around obstacle by lane crossing function, it shall comply with 4.6.2.3.3.
Contents
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Safety requirements for advanced combined driver assistance system
5 Safety requirements for basic single-lane combined driver assistance system
6 Safety requirements for basic multi-lane combined driver assistance system
7 User notification
8 System disablement
9 Proving ground test methods
10 Road test methods
11 Determination of identical type
12 Implementation of the standard
Annex A (Normative) Cross‑reference table of clauses to proving ground tests, road tests and document inspections
Annex B (Normative) Credibility assessment requirements for simulation tests
Annex C (Normative) Functional safety and intended functional safety requirements
Annex D (Normative) Functional safety and intended functional safety description requirements
Annex E (Normative) Combined driver assistance safety assurance requirements
Annex F (Normative) Data recording requirements
GB 47955-2026 Intelligent and connected vehicle—Safety requirements of combined driver assistance system
On June 27, 2026, the mandatory national standard GB 47955-2026 Intelligent and connected vehicle - Safety requirements of combined driver assistance system was approved and issued by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China. The standard, developed by and under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China (MIIT), is set to take effect on January 1, 2027.
A combined driver assistance system refers to a system that assists the driver in executing lateral and longitudinal control of the vehicle under specific operational design conditions, on the premise that the driver continuously monitors the traffic situation and maintains control of the vehicle. In recent years, a new round of technological revolution and industrial transformation has been advancing in depth, driving profound changes in the product form, usage patterns and business models of automobiles. China's intelligent and connected vehicle industry has thus entered a "window period" of rapid development. Since 2026, the market penetration rate of new passenger cars with combined driver assistance function has reached 70%, with models featuring Navigation on Autopilot (NOA) functions exceeding a 30% penetration rate. MIIT has prioritized the development of the ICV industry, establishing two editions of the technical standard system for ICVs and issuing critical and imperative standards on information security, software updates and automated driving data recording systems. Building on previously released recommended national standards for basic single-lane combined driver assistance system and basic multi-lane combined driver assistance system, etc., MIIT initiated the development of this mandatory national standard in 2024 through the National Technical Committee of Auto Standardization
GB 47955-2026 is grounded in the needs of China’s industrial development and industry supervision, while taking into account technical feasibility, product compatibility and practical operability. It puts forward a safety indicator system that features clear requirements, comprehensive dimensions and adaptation to national conditions. 1. It comprehensively accounts for different product forms and technical routes, specifying applicable safety requirements for basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system and advanced combined driver assistance system. 2. Taking into account China's road traffic characteristics, it establishes baseline safety requirements from dimensions including functional requirements, data recording, and vehicle manufacturer safety assurances to ensure the safe operation of combined driver assistance systems. 3. Recognizing the core positioning of the system as an "assistive" driving function, it establishes requirements for human-machine interaction, instructions for use and driver training to provide a fundamental guarantee for proper collaboration between the user and the system. 4. In line with the actual needs of industry management in China, it provides multi-tiered evaluation methods for proving ground tests, road tests and document inspections to comprehensively assess the system's safety capabilities.
At the international regulatory level, the United Nations World Forum for Harmonization of Vehicle Regulations (WP.29) issued the technical regulation Uniform Provisions Concerning the Approval of Vehicles with regard to Driver Control Assistance Systems (DCAS) (UN R171) in March 2024, and completed its first revision in March 2025. This regulation sets forth unified technical requirements covering functional requirements, human-machine interaction, and failure response, and also specifies supporting test and validation methods, in-service monitoring and certification procedures, etc. Compared with UN R171, GB 47955-2026 imposes more detailed technical requirements in areas such as the design operational domain of system, functional requirements, driver state monitoring and user notification. Besides, it adds several proving ground test scenarios along with corresponding test procedures and pass criteria, and clearly specifies the inspection and test methods associated with the proposed technical requirements. While maintaining alignment with the core technical content of the international regulation, it is better tailored to the complexity of China’s road traffic environment and the practical needs of industry management.
The issuance and implementation of GB 47955-2026 establish a clear and unified safety framework for combined driver assistance systems, which is of great significance for improving the safety of intelligent and connected vehicles and ensuring the healthy and sustainable development of the industry. In the next phase, MIIT will thoroughly promote and implement the standard, strengthen the approval management of intelligent and connected vehicle products, further consolidate the primary safety responsibilities of enterprises, and ensure the safe and compliant application of combined driver assistance systems. At the same time, it will accelerate the issuance and implementation of other mandatory national standards, such as those for automated driving systems, promote the establishment of a comprehensive testing and regulatory system for intelligent and connected vehicles, accelerate the industrialization of automated driving technologies, and lead the high-quality development of China’s intelligent and connected vehicle industry.
ICS 43.020
CCS T 40
National Standard of the People's Republic of China GB 47955-2026
Intelligent and connected vehicle - Safety requirements of combined driver assistance system
(English Translation)
Issue date: 2026-06-27 Implementation date: 2027-01-01
Issued by the State Administration for Market Regulation of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword II
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Safety requirements for advanced combined driver assistance system 8
5 Safety requirements for basic single-lane combined driver assistance system 19
6 Safety requirements for basic multi-lane combined driver assistance system 20
7 User notification 21
8 System disablement 22
9 Proving ground test methods 22
10 Road test methods 50
11 Determination of identical type 54
12 Implementation of the standard 57
Annex A (Normative) Cross‑reference table of clauses to proving ground tests, road tests and document inspections 59
Annex B (Normative) Credibility assessment requirements for simulation tests 64
Annex C (Normative) Functional safety and intended functional safety requirements 69
Annex D (Normative) Functional safety and intended functional safety description requirements 96
Annex E (Normative) Combined driver assistance safety assurance requirements 99
Annex F (Normative) Data recording requirements 100
Foreword
This document is drafted in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
Attention is drawn to the possibility that some content of this document may involve patents. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China.
Intelligent and connected vehicle - Safety requirements of combined driver assistance system
1 Scope
This document specifies the safety requirements and the determination of identical type for basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system, and advanced combined driver assistance system for intelligent and connected vehicle, and describes the corresponding inspection and test methods.
This document applies to M and N category vehicles equipped with basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system, or advanced combined driver assistance system.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 5768.3 Road traffic signs and markings - Part 3: Road traffic markings
GB 5768.4-2017 Road traffic signs and markings - Part 4: Work zone
GB/T 10000-2023 Human dimensions of Chinese adults
GB 11551 The protection of the occupants in the event of a frontal collision for motor vehicle
GB/T 12534 Motor vehicles - General rules of road test method
GB 16735 Road vehicles - Vehicle identification number (VIN)
GB 20071 The protection of the occupants in the event of a lateral collision
GB/T 20913 The protection of the occupant in the event of a frontal collision for passenger car
GB/T 21437.2-2021 Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 2:Electrical transient conduction along supply lines only
GB/T 21437.3-2021 Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 3 : Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
GB/T 28046.1-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 1 : General
GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads
GB/T 28650 Road safety barrel
GB/T 30038-2013 Road vehicles - Degrees of electrical equipment protection (IP-Code)
GB/T 34589-2017 Road vehicles - Diagnostic connector
GB/T 34590
(all parts) Road vehicles - Functional safety
GB 34660-XXXX Road vehicles - Requirements and test methods of electromagnetic compatibility
GB/T 34847-2017 General technical requirements of polyethylene barrier
GB 39265-2020 Road vehicles - Performance requirements and testing methods for blind spot detection (BSD) system
GB/T 39323 Performance requirement and testing method for lane keeping assist (LKA) system of passenger cars
GB 39732-2020 Vehicle event data recorder system
GB 39901 Technical requirements and testing methods for advanced emergency braking system of light-duty vehicles
GB/T 40429 Road vehicles - Diagnostic communication over controller area network (DoCAN) - Dictionary
GB/T 40822 Road vehicles - Unified diagnostic services
GB/T 41796 Performance requirements and test methods for lane keeping assist system of commercial vehicles
GB/T 43258.4 Road vehicles - Diagnostic communication over Internet Protocol (DoIP) - Part 4:Ethernet-based high-speed data link connector
GB/T 43267 Road vehicles - Safety of the intended functionality
GB/T 44461.1-2024 Intelligent and connected vehicle - Technical requirements and testing methods for combined driver assistance system - Part 1: Single-lane manoeuvre
GB/T 44461.2-2024 Intelligent and connected vehicle - Technical requirements and testing methods for combined driver assistance system - Part 2: Multi-lane manoeuvre
GB 44497-2024 Intelligent and connected vehicle - Data storage system for automated driving
GB/T 45312 Intelligent and connected vehicles - Operational design condition for automated driving system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 40429, GB/T 44461.1, GB/T 44461.2, GB/T 34590.1 as well as the following apply.
3.1
combined driver assistance system
system composed of hardware and software that, within its operational design condition, continuously performs lateral and longitudinal motion control of the vehicle as part of the dynamic driving task, and is equipped with the capability for partial object and event detection and response commensurate with the lateral and longitudinal motion control being performed
Note 1: Combined driver assistance systems are divided into four system categories: basic single-lane combined driver assistance system, basic multi-lane combined driver assistance system ,advanced combined driver assistance system, and parking combined driver assistance system. The four categories are considered as mutually independent systems.
Note 2: Where no confusion arises, any combined driver assistance system in this document is referred to as the "system".
3.1.1
basic single-lane combined driver assistance system
combined driver assistance system that, only in the road environment of category A (3.35), continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in controlling the vehicle to travel only within a selected single lane
3.1.2
basic multi-lane combined driver assistance system
combined driver assistance system that, only in the road environment of category A (3.35), after the lane change procedure is initiated solely by the driver, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes in the same direction of travel
3.1.3
advanced combined driver assistance system
combined driver assistance system that, other than the basic single‑lane combined driver assistance system (3.1.1), basic multi‑lane combined driver assistance system (3.1.2) and parking combined driver assistance system, in the road environment of category A (3.35) and/or the road environment of category B (3.36), continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in performing some of the dynamic driving tasks
3.2
combined driver assistance function
function by which a combined driver assistance system assists the driver in performing some of the dynamic driving tasks under specific operational design conditions
Note: under the condition that no confusion arises, the "combined driver assistance function" in this document is referred to as the "function".
3.3
lane-cruise manoeuvre function
function that continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in controlling the vehicle to cruise within the visible lane boundaries
3.4
non lane-cruise manoeuvre function
function that continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in causing the vehicle to leave its current lane, at least partially, or to change its direction of travel
Note: Driver‑initiated lane change control, driver‑confirmed lane change control, system‑initiated lane change control, navigating around obstacle by lane crossing, intersection passage (e.g. straight ahead, left turn, right turn, U‑turn), and roundabout passage are all considered non lane‑cruise manoeuvre functions.
3.5
driver-initiated lane change function
function that, after the driver initiates the lane change procedure, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes
3.6
driver-confirmed lane change function
function that, after the driver confirms the system’s lane change intention, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes
3.7
system-initiated lane change function
function that, after the system release a lane change intention and the driver does not cancel it, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in executing the lane change procedure between lanes
3.8
navigating around obstacle by lane crossing function
function that, when there is an obstacle or other traffic participants in the current lane that impedes the vehicle’s forward movement, continuously performs lateral and longitudinal motion control of the vehicle based on the driving environment around the vehicle, assisting the driver in controlling the vehicle to cross the lane boundary and, after the obstacle is cleared, return to the original lane
3.9
risk mitigation function; RMF
function that, in the event that the driver continuously fails to respond to the system’s driver disengagement prompts or warning signals, continuously performs lateral and longitudinal motion control of the vehicle for a certain period of time based on the driving environment around the vehicle, assisting the driver in parking the vehicle within a target parking area
3.10
driver disengagement
state, confirmed by the system, in which the driver is currently unable to safely perform the corresponding dynamic driving task
Note: Driver disengagement includes hand disengagement and visual disengagement.
3.11
driver’s ocular points
two points located 635 mm vertically above the R‑point of the driver’s seat, perpendicular to the vehicle longitudinal reference plane and spaced 65 mm apart
[Source: GB/T 15084 -2022, 3.25]
3.12
ocular reference point
midpoint between driver's ocular points
[Source: GB/T 15084 -2022, 3.27]
3.13
hands on request; HOR
signal used to prompt the driver to keep hands on the steering wheel
3.14
eyes on request; EOR
signal used to prompt the driver to redirect visual attention back to areas relevant to the driving task
3.15
direct control alert; DCA
warning signal used to prompt the driver to immediately regain at least lateral motion control of the vehicle
3.16
operational design domain; ODD
external environmental conditions determined during the design of the driving automation system as applicable to its functional operation
Note: Typical external environmental conditions include road, traffic, weather, lighting, etc.
[Source: GB/T 40429-2021, 2.11]
3.17
operational design condition; ODC
general term for various conditions determined during the design of the driving automation system as applicable to its functional operation, including the operational design domain, vehicle status, occupant status, and other necessary conditions
[Source: GB/T 40429-2021, 2.12]
3.18
lane
driving lane that does not require changing the travel path and is free from any fixed obstacle interference
[Source: GB/T 44461.1-2024, 3.2, modified]
3.19
lane marking
visible road traffic marking used to determine lane boundary
[Source: GB/T 44461.1-2024, 3.3]
3.20
target lane
another lane that the vehicle intends to enter
[Source: GB/T 44461.2-2024, 3.4, modified]
3.21
lane marking of target lane
common lane marking between the current lane and the target lane
[Source: GB/T 44461.2-2024, 3.2]
3.22
lane change procedure
procedure from the initiation of a lane change by the driver or system and the first activation of the turn signal, to the completion of the lane change and the automatic deactivation of the turn signal or until the system sends a lane change completion indication signal
[Source: GB/T 44461.2-2024, 3.5, modified]
3.22.1
lane change preparation phase
phase from the initiation of the lane change procedure to the point when the outer side of the front wheel closest to the target lane contacts the target lane marking on the current lane side
[Source: GB/T 44461.2-2024, 3.5.1]
3.22.2
lane change manoeuvre phase
4 Safety requirements for advanced combined driver assistance system
4.1 Overall requirements
4.1.1 The system shall be such designed that the driver continuously performs the corresponding dynamic driving task, and shall comply with the requirements of 4.8.3.
4.1.2 The system shall be designed to be capable of effectively addressing reasonably foreseeable driver misuse.
4.1.3 The system shall respond at any time to the driver’s effective override or actions to deactivate the system, and shall comply with the requirements of 4.8.1.3 and 4.8.2.
4.1.4 The system and its functions shall assist the driver in controlling the vehicle only within the operational design speed range.
4.1.5 If the system is activatable in the road environment of category A, when the system is active in the road environment of category A, the maximum speed set by the driver shall not exceed the maximum speed limit of all road environments of category A within the corresponding ODC. When tested in accordance with 9.3, the steady‑state speed of the test vehicle shall not exceed the maximum speed limit of all road environments of category A within the system’s ODC.
4.1.6 If the system is activatable in road environment of category B, when the system is active in the road environment of category B, the maximum speed set by the driver shall not exceed the maximum speed limit of all road environments of category B within the corresponding ODC. When tested in accordance with 9.3, the steady‑state speed of the test vehicle shall not exceed the maximum speed limit of all road environments of category B within the system’s ODC.
4.1.7 The system’s objectives shall comply with road traffic regulations.
Note 1: For the requirements related to “objectives shall” in this document, if the test vehicle only fails to comply with the requirements due to external factors during the road test, conformity shall be confirmed based on the documentation submitted by the vehicle manufacturer.
Note 2: If there are road traffic regulations that the system cannot address (e.g., regional traffic restriction measures, temporary road closures, etc.), the vehicle manufacturer is permitted to explain this in the system’s instructions for use in accordance with 7.2 e).
4.1.8 The system shall be designed such that its objectives enable the vehicles to adapt to surrounding traffic conditions so as to avoid disrupting normal traffic flow, and shall
a) adapt to the status of other traffic participants, and not stop or wait unnecessarily;
b) respond in a timely manner to relevant traffic control facilities in the vicinity of the vehicle;
c) not perform emergency braking or emergency steering measures unnecessarily.
4.1.9 The system shall be designed to detect and respond to other traffic participants, road infrastructure, and obstacles in the applicable road environment, so as to alert the driver to collision risks and avoid collisions. If the system can be activated in the road environment of category A or B, when tested in accordance with 9.4.6, 9.4.7, 9.4.10.2.2, and 9.4.11, the vehicle shall not collide without intervention by the test personnel. If the system can be activated in the road environment of category B, when tested in accordance with 9.5.2 and 9.5.4 to 9.5.8, the vehicle shall not collide without intervention by the test personnel. The system is permitted to comply with the requirements of this clause when interacting with other driving automation systems.
Note 1: If the system does not have a driver‑initiated lane change function, the tests in 9.4.6.1, 9.4.6.2, 9.5.5.1, and 9.5.6.1 may be ignored.
Note 2: If the system does not have a driver‑confirmed lane change function, the test in 9.4.6.3 is not required.
Note 3: If the system does not have a system‑initiated lane change function, the test in 9.4.6.4 is not required.
Note 4: If the RMF does not have lane‑change capability, the test in 9.4.10.2.2 is not required.
Note 5: If the system does not have a roundabout negotiation function, the test in 9.5.2 is not required.
Note 6: If the system does not have intersection turning capability, the tests in 9.5.4.2 and 9.5.6.3 is not required.
4.1.10 The system shall enable the vehicle to maintain a reasonable safety space with other traffic participants. If, due to the behaviour of other traffic participants (e.g., cut‑in by an adjacent vehicle, deceleration of a preceding vehicle), the vehicle is unable to maintain a reasonable safety space with the preceding vehicle, the system shall implement a reasonable control strategy to avoid or reduce the collision risk and, at an appropriate subsequent moment, re‑establish a reasonable safety space with the preceding vehicle.
4.1.11 The system shall provide the driver with clear and sufficient system status information and motion control information. Each piece of information shall be easily distinguishable and shall not cause distraction to the driver. Optical signals shall be clearly visible to the driver in the normal driving position, even during daytime.
4.1.12 The design of the system’s human‑machine interface shall not cause confusion for the driver with respect to other systems installed on the vehicle.
4.1.13 The vehicle manufacturer shall provide a description of the perception detection range relevant to the system’s functions in accordance with the requirements of Annex C.
4.1.14 The system shall have at least a lane‑cruise manoeuvre function and RMF. If the system can be activated in road environment of category B, it shall have at least an intersection passage function. If the system has a non lane‑cruise manoeuvre function, it shall comply with 4.6.2.1 and the following requirements:
a) If it has a lane change control function, it shall comply with 4.6.2.2.1 and the following requirements:
1) If it has a driver‑initiated lane change function, it shall comply with 4.6.2.2.2;
2) If it has a driver‑confirmed lane change function, it shall comply with 4.6.2.2.3;
3) If it has a system‑initiated lane change function, it shall comply with 4.6.2.2.4;
b) If it has other non lane‑cruise manoeuvre functions, it shall comply with 4.6.2.3.1 and the following requirements:
1) If it has roundabout passage and/or intersection passage functions, it shall comply with 4.6.2.3.2;
2) If it has a navigating around obstacle by lane crossing function, it shall comply with 4.6.2.3.3.
Contents of GB 47955-2026
Contents
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Safety requirements for advanced combined driver assistance system
5 Safety requirements for basic single-lane combined driver assistance system
6 Safety requirements for basic multi-lane combined driver assistance system
7 User notification
8 System disablement
9 Proving ground test methods
10 Road test methods
11 Determination of identical type
12 Implementation of the standard
Annex A (Normative) Cross‑reference table of clauses to proving ground tests, road tests and document inspections
Annex B (Normative) Credibility assessment requirements for simulation tests
Annex C (Normative) Functional safety and intended functional safety requirements
Annex D (Normative) Functional safety and intended functional safety description requirements
Annex E (Normative) Combined driver assistance safety assurance requirements
Annex F (Normative) Data recording requirements
