The scope of this standard is the support of conformity evaluation of OBU and RSE to prCEN ISO/TS 12813. A conformance-testing standard will provide comparability of results from tests performed at different places and times and facilitate communications between parties. The standard will be divided in two parts. The scope of the second part, this part, will contain the Abstract test suite (ATS) to test On Board Unit and Road Side Equipment. The ATS will be based on the Tree and Tabular Combined Notation test script language that is suitable for implementation in computer-aided test tools. TTCN is a test language that is widespread, dedicated test programming language for compliance testing and is standardized by ISO (ISO/IEC 9646-3)