This technical report builds on the 5GAA white paper “Road traffic operation in a digital age” and guides stakeholders on implementing various vehicle-to-everything (V2X) applications using cellular networks and information sharing structures between backend systems.

It presents an application-level reference blueprint architecture and introduces an “information sharing domain” to enable scalable digital data exchange among stakeholders such as vehicle manufacturers, service providers, and infrastructure operators. The report details how to implement V2X applications that enhance safety and mobility, with examples including traffic event and signal information sharing, emergency vehicle approaching alerts, automated valet parking, and vulnerable road user protection. It also explains different implementation options for these applications within vehicles, distinguishing between OEM-controlled, OEM-supported, and OEM-independent apps.

Additionally, it describes proven solutions and references initial deployments like C-Roads and Talking Traffic, highlighting their effectiveness in accelerating V2X service adoption. Ecosystem stakeholders are encouraged to use this document as a guide for deploying V2X services using cellular networks and information sharing, with the potential to address more demanding use cases through enhanced cellular network capabilities.

Read the full report here.

For more information, find the complementary technical report “Business Perspectives on Vehicle-to-
Network-to-Everything (V2N2X) Deployments.”

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A 5GAA online session on the V2N2X topic and reports took place on 18 June 2024. The recording of the online session can be accessed here. The slides of the presentation can be accessed here.

The paper was originally published in May 2024. The current downloadable version is the updated edition, released on 3 June 2025. 5GAA remains committed to keeping all its publications accurate and up to date.

Cellular Vehicle-to-Everything, or C-V2X, is an umbrella term that encompasses all 3GPP V2X technologies, including both direct (PC5) and mobile network communications (Uu). In many cases, both direct and network modes of C-V2X can be used for the same or similar automotive and Intelligent Transport System (ITS) applications, yet with different service characteristics. However, there are fundamental differences when it comes to the architecture and realisation of different Use Cases applying mobile network vs. direct, short-range, communications. This leads to different ways of handling security, privacy, and how to ensure data quality – the fundamental requirements of every ITS service – when using C-V2X mobile network communication or direct communication. This is already reflected in other organisations such as ITS America.

This 5GAA paper provides an overview of how security, privacy, and data quality are addressed for C-V2X using mobile network and backend communications, also known as Vehicle-to-Network-to-Everything (V2N2X) solutions.

The paper was originally published in December 2024. The current downloadable version is the updated edition, released on 3 June 2025. 5GAA remains committed to keeping all its publications accurate and up to date.

The societal ambitions of zero fatalities and climate neutrality in road transportation, as well as future ambitions of automated driving require a new approach to the handling of road traffic information. The key stakeholders of the ecosystem, global automotive OEMs, service providers (SPs) and infrastructure owner-operators (IOOs), need new digital methods of operating and interworking.

This white paper proposes a transformative approach for automotive stakeholders, emphasizing scalable digital data exchange and a federated architecture to manage road traffic information efficiently. The architecture ensures bidirectional communication, delivering static, semi-static, and near real-time data for safe and efficient transportation. The paper concludes with recommendations for a National Roadway Digital Strategy, federated information-sharing structures, and aligned investments. Emphasising the integration of technologies and data-driven decision-making, it aligns with 5GAA’s mission to propel road traffic operations into the digital age.

Read or download the full white paper here.

The paper was originally published in January 2024. The current downloadable version is the updated edition, released on 3 June 2025. 5GAA remains committed to keeping all its publications accurate and up to date.

Note: To complement this white paper with further technical details and business considerations, 5GAA has developed two technical reports and one position paper:

• Technical Report “Vehicle to Network to Everything (V2N2X) Communications; Architecture, Solution Blueprint, and Use Case Implementation Examples”: This technical report describes for different ecosystem stakeholders how to realise various V2X applications and use cases (UCs), using cellular network communications in combination with information sharing structures between backend systems. It also clarifies the different implementation options of the V2X application in a vehicle and their related implications. In this report, readers can also find verified V2N2X solutions and references to initial operational deployments that realize the suggested application-level reference architecture, e.g., C-Roads, Talking Traffic, Mobilidata, etc. The document is available here.

• Technical Report “Business Perspectives on Vehicle-to-Network-to-Everything (V2N2X) Deployments”: This technical report describes the V2N2X market from a business standpoint, encompassing market dynamics, stakeholder analysis, and business models deployed in various exemplary instances. The document is available here.

• Position paper “V2N2X security, privacy, and data quality”: This position paper provides an overview of how security, privacy, and data quality are addressed for C-V2X using mobile network and backend communications, with highlights on the different characteristics and approaches in comparison with C-V2X direct communications. The document is available here.

A 5GAA online session on the V2N2X topic and reports took place on 18 June 2024. The recording of the online session can be accessed here. The slides of the presentation can be accessed here.

Panel Discussion: Supporting the market growth of connected vehicles

Date & Time: Tuesday, 3 June 2025 | 14:40 – 15:25
Location: The Fairmont Windsor Park, Windsor, UK

As the connected and autonomous vehicle market accelerates, the global value of Vehicle-to-Everything (V2X) technology is expected to soar within the next decade. This evolution—culminating in the widespread deployment of 5G-V2X—marks a critical shift toward the software-defined vehicle (SDV), where advanced connectivity features are embedded from the ground up.

This panel brings together industry leaders to explore how the automotive ecosystem is preparing for this transformation and what is needed to support large-scale market growth. From evolving business models and cross-sector collaboration to overcoming deployment barriers, the discussion will also examine the crucial role that telecommunications providers must play to meet rising demands for seamless, reliable, and secure connectivity.

5GAA will be represented by CTO Maxime Flament, who will offer insights from the association’s work at the intersection of telecom, automotive, and infrastructure, and highlight key enablers for achieving truly connected mobility.

The 5G Automotive Association (5GAA) has released its 2024 Annual Report, highlighting the association’s continued progress toward the global deployment of Cellular Vehicle-to-Everything (C-V2X) technology and the realisation of connected mobility solutions. The report outlines 5GAA’s milestones and achievements over the past year across strategic areas such as policy engagement, standardisation, technical innovation, and global collaboration. 

Expanding Global Presence and Strengthening Industry Collaboration 

In 2024, 5GAA brought together over 110 member organisations from across the globe, reflecting a truly international footprint in advancing connected mobility. The membership spanned Europe (45%), Asia (31%), and the Americas (24%), and included 10 of the top 15 global automakers, 8 of the top 10 mobile network operators, and 2 leading smartphone manufacturers. 

Beyond its core membership, 5GAA also strengthened ties with more than 40 external organisations, with new cooperation agreements signed with the Chinese Institute of Communications and the Automotive Edge Computing Consortium. 

Find out more about our activities and download the document.