V2XSafe: Functional Safety and SOTIF Assurance for Connected Automation

V2XSafe establishes rigorous safety lifecycles, hazard analysis, and safety-in-use validation methodologies for integrating wireless communication into autonomous vehicle steering and braking loops.

Transforming Wireless Links from Information Advisories to Safety-Critical Actuators

Using wireless V2X messages to trigger physical vehicle braking requires treating communication links with the same safety rigor as hydraulic brake lines. V2XSafe provides formal safety cases under ISO 26262 and ISO 21448.

Core Engineering Areas

• ISO 26262 ASIL Decomposition — Decomposing ASIL-D requirements into redundant ASIL-B(D) wireless and perception channels.
• ISO 21448 SOTIF Assurance — Mitigating triggering conditions like packet delays, antenna blockage, and urban shadowing.
• Fail-Operational Degraded Modes — Switching from cooperative adaptive cruise control (CACC) to standalone radar ACC in milliseconds.

Technical Articles

• Hazard Analysis and Risk Assessment (HARA) for Autonomous Emergency Braking Triggered by V2X
• Constructing Evidential Safety Cases for Autonomous Fleets: Integrating UL 4600 and ISO 26262

Related Cluster Architecture Specifications

• AutomotiveV2X — Connected Vehicle-to-Everything & Cooperative ITS Architecture
• CellularV2X — 3GPP C-V2X Architecture, PC5 Direct Sidelink & Cellular Uu Infrastructure
• NRV2X — 5G NR V2X Sidelink, Sub-Millisecond Latency & High-Rate Sensor Sharing
• ISACV2X — Integrated Sensing and Communication (ISAC) for Automotive V2X