This standard specifies the Reliability test methods for Motorcycles and Portable Motorcycles, including test conditions, steps, data processing and reporting requirements. Applicable to all Motorcycles (unless otherwise stated), it aims to ensure the Reliability of Motorcycles under various conditions of use. The standard covers the whole process from the design of the test to the analysis of the results, providing a complete set of systematic methods and specifications to evaluate the performance and durability of Motorcycles. This helps to improve the mass and safety of Motorcycles and ensure their Reliability in actual use.