ISO 12021:2011规定了一种开环试验方法，用于通过风力发电机确定车辆对侧风的敏感性。它适用于ISO 3833《乘用车-拖车组合和轻型卡车》中定义的乘用车。其对摩托车的适用性尚待调查。 本试验方法中规定的试验条件不能代表实际行驶条件，但有助于测量车辆对侧风的动态响应。

ISO 12021:2011 specifies an open-loop test method to determine the sensitivity to lateral wind of a vehicle by means of a wind generator. It applies to passenger cars as defined in ISO 3833, passenger car-trailer combinations and light trucks. Its applicability to motorcycles is yet to be investigated. The test conditions specified in this test method are not representative of real driving conditions but are useful to obtain measures of vehicle dynamic response to lateral wind.