GB/T 44721-2024 Intelligent and connected vehicle - General technical requirements for automated driving system
1 Scope
This document specifies the overall requirements for automated driving system (ADS), and requirements for execution of dynamic driving tasks, dynamic driving task fallback, and human-machine interaction.
This document is applicable to the ADS-equipped motor vehicles of Categories M and N.
2 Normative references
The following documents contain requirements 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/T 40429-2021 Taxonomy of driving automation for vehicles
GB/T 41798 Intelligent and connected vehicles - Track testing methods and requirements for automated driving functions
GB/T 43267-2023 Road vehicles - Safety of the intended functionality
GB/T 44298-2024 Intelligent and connected vehicles - Symbols for controls, indicators and tell-tales
GB/T 44373-2024 Intelligent and connected vehicle - Terms and definitions
GB/T 44719 Intelligent and connected vehicle - Methods and requirements of road test for automated driving functions
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 34590.1, GB/T 40429-2021, GB/T 43267-2023, GB/T 44373-2024 and the following apply.
3.1
automated driving function
function that driving automation system performing the full range of dynamic driving tasks continuously and automatically in place of the driver under specific design operating conditions
Note: The general term for driving automation functions at level 3 or above specified in GB/T 40429-2021, including conditional automated driving, highly automated driving and fully automated driving.
[Source: GB/T 44373-2024, 6.4]
3.2
automated driving system; ADS
system composed of hardware and software to realize automatic driving functions
Note: The "automated driving system" refers to the driving automation system of level 3 and above specified in GB/T 40429-2021.
[Source: GB/T 44373-2024, 5.3]
3.3
inactive state
state in which the ADS does not perform vehicle motion control
3.4
ready state
inactive state in which the ADS can be activated
3.5
active state
state in which the ADS performs vehicle motion control
3.6
severe ADS failure
failure of key components of ADS leading to the failure that seriously affects the safe operation of ADS
Example: Failure of core computing elements.
3.7
severe vehicle failure
any failure that affects the ability of ADS to both perform dynamic driving task (DDT) and manual driving at the same time
Example: Power failure, brake system failure, sudden drop in tire pressure.
3.8
planned takeover event
event for which ADS is aware of in advance and needs to send an intervention request
Example: An event where the edge of the operational design domain (ODD) is reached.
4 General requirements
4.1 Clear operational design conditions (ODC) shall be specified for the ADS.
4.2 The ADS shall only be activated under its operational design conditions (ODC).
4.3 The ADS shall have sufficient object and event detection and response (OEDR) capabilities to support it in safely performing all dynamic driving tasks (DDT).
4.4 The ADS shall respond promptly to the effective user actions. If the user's action poses a critical collision risk, ADS may temporarily suspend or suppress the response with the method stated by the vehicle manufacturer. If the ADS has the function of temporarily suspending or suppressing the response to user actions, the conditions for suspension or suppression shall be clearly defined.
4.5 The ADS shall implement reasonable control strategies to address foreseeable misuse by users.
4.6 The ADS shall continuously monitor its own status to confirm whether it has failed and whether it can perform all dynamic driving tasks (DDT).
4.7 The ADS in the active state shall perform all dynamic driving tasks (DDT), and shall not pose unreasonable safety risks.
4.8 The ADS in the active state shall comply with the road traffic regulations when performing the dynamic driving tasks (DDT).
4.9 The ADS in the active state shall satisfy the reasonable expectations of other road users when performing the dynamic driving tasks (DDT).
4.10 For the devices or systems required to support the driver in resuming human driving, the ADS in the active state shall confirm whether the devices or systems are in an operating condition suitable for human driving. If the relevant devices or systems are in an improper operating condition, the ADS shall implement reasonable control strategies.
Note: The required devices or systems include defogging devices, windshield wipers, and lighting devices.
4.11 The ADS in the active state shall not cause any reasonably foreseeable and preventable collision.
4.12 The ADS in the active state shall implement reasonable control strategies when the collision is inevitable, so as to reduce the injuries or losses caused by the accident.
4.13 The ADS in the active state shall bring the vehicle to a standstill upon detecting a collision, unless otherwise stated by the vehicle manufacturer.
4.14 The ADS in the active state shall implement reasonable control strategies when the operational design conditions (ODC) are about to be not met or has not been met.
Contents Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Execution of dynamic driving tasks 6 Dynamic driving task fallback 7 Human-machine interaction 8 Instructions Annex A (Normative) Special safety requirements applicable to ADS Annex B (Informative) Correspondence table of technical requirements vs test types Bibliography
