This template presents a structured methodology for describing and assessing automated vehicle (AV) features, with a focus on ensuring comprehensive standardization and reproducibility in testing across various scenarios. The document delineates a systematic approach to integrating operational design domains (ODD), levels of automation, and behaviors into AV feature descriptions. Through the development of a feature description framework and a corresponding testing template, the document demonstrates how to measure and validate the performance of AV features under controlled and variable conditions. Key elements of the feature description framework include detailed behavior specifications, performance metrics, and scenario-based testing, which are essential for evaluating the effectiveness and safety of AV technologies. This template can be used as a tool to describe and test the AV feature in high-fidelity simulation environment. The outcomes aim to enhance communication among manufacturers, regulators, and other stakeholders, promoting a unified understanding of AV capabilities and compliance.