UNR 155 is a groundbreaking piece of legislation aimed at safeguarding the cybersecurity of connected vehicles. Recognizing the growing threats posed by cyberattacks to the automotive industry, this regulation establishes a comprehensive framework for vehicle cybersecurity.
PlaxidityX helps OEMs and Tier 1s establish management systems mandated by UNR 155 or ISO 21434. With our CSMS and ISO 21434 consulting services, vehicle type approval support and cyber security maintenance framework, you’ll be on your way to comprehensive compliance.
See also: UNR155 and motorcycle type approval
Key Provisions of UNR 155
UNR 155 mandates several key requirements for vehicle manufacturers:
- Cybersecurity Management System (CSMS): Manufacturers must implement a robust CSMS to manage cybersecurity risks throughout the vehicle’s lifecycle.
- Threat Analysis and Risk Assessment (TARA): Regular assessment of potential threats and vulnerabilities is mandatory.
- Software Updates: Vehicles must be capable of receiving over-the-air (OTA) updates to address security vulnerabilities.
- Incident Response: Manufacturers must have procedures in place to detect, respond to, and mitigate cyberattacks.
- Data Protection: Sensitive vehicle and driver data must be protected through appropriate security measures.

Impact of UNR 155 on the Automotive Industry
The implementation of UNR 155 has far-reaching implications for the automotive industry:
- Increased Security: The regulation enhances the overall security posture of connected vehicles.
- Consumer Confidence: By demonstrating a commitment to cybersecurity, manufacturers can build trust with consumers.
- Global Harmonization: UNR 155 promotes a consistent approach to cybersecurity across different countries.
- Innovation: The regulation encourages the development of new cybersecurity technologies and solutions.
Compliance with UNR 155 requires significant investment in cybersecurity infrastructure and expertise. However, the long-term benefits in terms of protecting consumers and maintaining brand reputation outweigh the challenges.
ISO 21434: A Comprehensive Cybersecurity Standard
ISO 21434 is a globally recognized standard that provides a comprehensive framework for managing cybersecurity risks throughout the entire lifecycle of a road vehicle. It complements UNR 155 by offering detailed guidelines for implementing cybersecurity measures.
Key Aspects of ISO 21434
- Cybersecurity Management System (CSMS): Outlines requirements for establishing and maintaining a CSMS, including roles, responsibilities, and processes.
- Cybersecurity Engineering: Defines the cybersecurity engineering activities that should be integrated into the vehicle development process.
- Threat Analysis and Risk Assessment (TARA): Provides guidance on identifying, assessing, and mitigating cybersecurity risks.
- Cybersecurity Lifecycle: Covers all phases of the vehicle lifecycle, from concept to decommissioning.
- Supply Chain Security: Emphasizes the importance of managing cybersecurity risks within the supply chain.
Benefits of ISO 21434 Compliance
Adhering to ISO 21434 offers several advantages:
- Risk Mitigation: Reduces the likelihood and impact of cyberattacks.
- Consumer Confidence: Demonstrates a strong commitment to vehicle safety.
- Legal Compliance: Aligns with regulatory requirements like UNR 155.
- Competitive Advantage: Can differentiate a company in the marketplace.
By implementing ISO 21434, automotive manufacturers can create a robust cybersecurity culture and protect their vehicles from emerging threats.