Road vehicles; Steady state circular test procedure

This technical specification outlines a standardized procedure for conducting constant speed circular driving tests on road vehicles. The methodology establishes specific conditions and operational requirements to evaluate vehicle dynamics during continuous curved path traversal. It defines key parameters such as steering input, vehicle speed, and trajectory control to ensure consistent test execution across different evaluation environments. The framework addresses safety protocols and measurement techniques essential for assessing handling characteristics under steady-state cornering conditions. By providing a uniform approach, the document facilitates comparability of performance data among various vehicle models and testing facilities. The guidance covers preparation phases, execution steps, and data recording methodologies to support engineering analysis and development processes. This procedural standard serves as a foundational reference for vehicle manufacturers and research institutions engaged in mobility safety and handling optimization efforts. The approach emphasizes repeatability and precision in experimental setups while accounting for variable environmental factors that may influence test outcomes.