1. European Telecommunications Standards Institute (ETSI): TR 102 638 V1.1.1 (2009-06): Intelligent Transport Systems; Vehicular Communications; Basic set of Applications; Definitions (2009)
2. European Parliament and Council: Directive 2010/40/EU of the European Parliament and of the Council of 7 July 2010 on the framework for the deployment of Intelligent Transport Systems in the field of road transport and for interfaces with other modes of transport. Official Journal (OJ) L207, 06 August 2010, pp. 1–13 (2010)
3. European Commission: Communication on A European Strategy on Cooperative Intelligent Transport Systems, a milestone towards cooperative, connected and automated mobility. [COM(2016) 766 final] (2016)
4. European Telecommunications Standards Institute (ETSI): ETSI TS 103 723 V1.2.1: Intelligent Transport Systems (ITS); Profile for LTE-V2X Direct Communication (2020)
5. Car-to-Car Communication Consortium: Basic System Profile, Release 1.5.0. (2020)