Overview
ISO/TS 20003:2026 is a technical specification developed by the International Organization for Standardization (ISO) addressing human-machine interface (HMI) requirements for over-the-air (OTA) software updates in road vehicles. This standard applies to passenger cars, light trucks, heavy trucks, buses, and other commercial vehicles that receive software updates remotely. Its primary goal is to ensure that vehicle operators are clearly informed and able to safely interact with OTA updates, particularly when such updates affect vehicle operation, safety, or feature quality.
Key Topics
- HMI Design for OTA Updates: ISO/TS 20003:2026 provides clear guidelines on how HMIs should communicate essential information to operators during the OTA update process, including notifications, warnings, and status updates.
- Safe and Informed Execution: The standard emphasizes the importance of operator awareness by specifying what notifications and user consents are required throughout each stage of the update.
- Visual Information and Symbols: Guidance is provided for the use of displays, symbols, colours, and their locations based on related ISO standards, ensuring operators notice and understand update-related information.
- Driver Distraction: The HMI design is required to minimize driver distraction, following best practices so that safety is not compromised during update-related interactions.
- Use Cases and Scenarios: The standard includes practical use case examples for common vehicle systems, highlighting potential operator interactions and necessary notifications under various vehicle states and update stages (e.g., normal operation, low battery, emergencies).
- Update states: Specification covers all OTA update stages, such as campaign notification, download, installation, activation, and completion, as well as possible error or anomaly notifications.
Applications
Adhering to ISO/TS 20003:2026 brings practical and safety benefits to multiple stakeholders:
- Vehicle Manufacturers: Ensures consistent, ergonomic HMI design for OTA updates across vehicle models, supporting brand trust and regulatory compliance.
- Fleet Operators and Commercial Users: Enhances operational reliability by providing clear update notifications and minimizing unplanned vehicle downtime due to misunderstood updates.
- Component and System Suppliers: Offers a framework for integrating update mechanisms and HMI elements seamlessly with existing in-vehicle systems.
- Safety Regulators: Aligns practice with international standards on user notifications and feature safety, supporting audit and certification processes.
- End Users/Drivers: Improves transparency by clearly indicating if an update is successful, impacts vehicle functions, or requires user intervention, thereby increasing user confidence in the technology.
Related Standards
ISO/TS 20003:2026 is designed to be used alongside other key international standards, particularly in the context of road vehicle safety and information systems:
- ISO 24089 - Processes and functionalities for software-update engineering, providing the overall framework for software update operations.
- ISO 15008 - In-vehicle display specifications and test procedures, particularly regarding visual presentation and flashing images.
- ISO 2575 - Standard symbols for vehicle controls, indicators, and tell-tales, ensuring familiar visual cues for operators.
- ISO 4040 - Location requirements for hand controls, indicators, and tell-tales within the vehicle.
By following ISO/TS 20003:2026, industry stakeholders can enhance user experience, support safer driving conditions, and ensure globally aligned execution of OTA software updates through well-designed HMIs. This standard is crucial as continually connected vehicles become the norm and as update-related safety concerns grow in complexity.