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CAR 2 CAR Communication Consortium

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CAR 2 CAR Communication Consortium
NameCAR 2 CAR Communication Consortium
TypeIndustry consortium
Founded2002
HeadquartersBrussels, Belgium
Region servedInternational
MembershipAutomotive manufacturers, suppliers, research institutes

CAR 2 CAR Communication Consortium

The CAR 2 CAR Communication Consortium is an industry-led association that promotes vehicle-to-vehicle communication standards and cooperative intelligent transport systems. It brings together manufacturers, suppliers, and research organizations to develop specifications for short-range communications aimed at improving road safety and traffic efficiency. The consortium aligns work with regional regulators and standard bodies to accelerate deployment across Europe, Asia, and North America.

Overview

The consortium acts as a coordinating body among major automotive companies such as Volkswagen, Daimler AG, BMW, Ford Motor Company, and Toyota Motor Corporation and suppliers such as Continental AG, Robert Bosch GmbH, and Telefónica. It interfaces with standards organizations including European Telecommunications Standards Institute, International Organization for Standardization, Institute of Electrical and Electronics Engineers, and 3rd Generation Partnership Project. The group connects research centers like Fraunhofer Society, VTT Technical Research Centre of Finland, and TNO with public agencies including European Commission, Transport for London, and national ministries. The consortium’s remit covers protocol stacks, message formats, security frameworks, and test procedures used in cooperative systems.

History and Development

Founded in 2002 by a coalition of European automakers and suppliers, the consortium emerged following demonstration projects in the late 1990s involving EUREKA, CARINFO, and field trials in cities such as Berlin, Munich, and Gothenburg. Early milestones included specification releases harmonized with work by ETSI ITS, parallel research from University of Michigan Transportation Research Institute, and demonstration events at venues like CERN and Consumer Electronics Show. Subsequent phases involved alignment with cellular-based initiatives led by 3GPP and cross-Atlantic cooperation with organizations such as National Highway Traffic Safety Administration and U.S. Department of Transportation. The consortium evolved as global OEM strategies shifted toward automated driving and connected mobility, coordinating with projects funded by Horizon 2020 and collaborations with European Automobile Manufacturers Association.

Membership and Governance

Membership comprises global automotive manufacturers, tier-1 suppliers, telecommunication operators, and technical institutes; notable members have included PSA Peugeot Citroën (now part of Stellantis), Nissan, Hyundai Motor Company, and Valeo. Governance is structured with a board of directors drawn from member companies, technical groups mirroring domains such as security, networking, and validation, and working groups that liaise with UNECE and regional certification bodies. The consortium publishes specifications following consensus-based processes similar to models used by Bluetooth Special Interest Group and Wi-Fi Alliance. Funding and operational oversight come from membership fees and in-kind contributions from partners like Ericsson and Qualcomm.

Technical Specifications and Standards

Technical outputs include message sets, protocol layers, and security frameworks compatible with standards such as ETSI ITS-G5, the IEEE 802.11p family, and extensions to ISO 26262 functional safety processes. Specifications address encoding formats aligned with ASN.1 and CAM/DENM message types harmonized with UNECE WP.29 recommendations and SAE International guidance on cooperative systems. Security architectures adopt concepts from IEEE 1609.2 and public key infrastructures comparable to initiatives by European Telecommunications Standards Institute and ENISA. Testing and conformance methods reference laboratory methodologies used by VDA, CEN, and certification regimes implemented in pilot sites like Helmond and Tampere.

Projects and Initiatives

The consortium has coordinated pilot deployments and interoperability tests alongside programs such as Safety Pilot Model Deployment, C-ITS Corridor, and European research projects under FP7 and Horizon 2020. Field trials have taken place in metropolitan regions including Amsterdam, Vienna, and Dresden, and linked corridors across Germany, Austria, and Netherlands. Collaborative initiatives include joint trials with telecommunications operators like Deutsche Telekom and testbeds involving research institutions such as KTH Royal Institute of Technology and Imperial College London. The consortium also contributes to open-source toolchains and interoperability workshops modeled on practices from ETSI plugtests and Open Source Automotive Foundation activities.

Impact on Road Safety and Mobility

By promoting interoperable vehicle-to-vehicle messaging, the consortium aims to reduce collision risk in scenarios such as emergency braking, intersection approaches, and vulnerable road user interactions studied by International Transport Forum and World Health Organization. Trials reported improvements in reaction times and queue management consistent with findings from ITS America deployments and academic studies at Massachusetts Institute of Technology and Delft University of Technology. The specifications support traffic efficiency measures used by municipal pilots coordinated with Transport for London and regional projects endorsed by European Commission transport policy, facilitating integration with advanced driver-assistance systems developed by Aptiv and automated-driving research from Cruise and Waymo.

Criticism and Challenges

Critics point to fragmentation between dedicated short-range approaches and cellular-based alternatives championed by 3GPP, raising interoperability questions echoed in debates involving GSMA and ETSI. Security and privacy concerns have been raised by academics at University of Cambridge and civil society organizations such as Electronic Frontier Foundation, focusing on pseudonym management and data governance. Deployment barriers include regulatory divergence across jurisdictions like United States, China, and European Union, supply-chain constraints affecting suppliers like Hella and certification complexity similar to challenges faced by Automotive Safety Integrity Level implementations. Ongoing technical debates involve coexistence with C-V2X modes, spectrum management overseen by European Conference of Postal and Telecommunications Administrations and International Telecommunication Union, and harmonization with automated-driving regulations under UNECE WP.29.

Category:Intelligent transportation systems