This part of ISO 15037 specifies the general conditions that apply when vehicle dynamics properties are determined according to ISO test methods. In particular, it specifies general conditions for ? variables, ? measuring equipment and data processing, ? environment (test track and wind velocity), ? test vehicle preparation (tuning and loading), ? initial driving, and ? test reports (general data and test conditions). These items are of general significance, independent of the specific vehicle dynamics test method. They apply when vehicle dynamics properties are determined, unless other conditions are required by the standard which is actually used for the test method. This part of ISO 15037 is applicable to passenger cars as defined in ISO 3833 and light trucks. NOTE The general conditions defined in existing vehicle dynamics standards are valid until a reference to this part of ISO 15037 is included.