This Technical Report specifies a method for determining transient response behaviour at approximately constant speed. It is not fully representative of real driving conditions but similar to lane change manoeuvres in real traffic. Applies to passenger cars as defined in ISO 3833. In a simplified form this test method is also specified in ISO 7401 together with alternative and complementary procedures.
You easily download any file type for your gadget.ISO/TR 8725:1988, Road vehicles - Transient open-loop response test method with one period of sinusoidal input | ISO TC 22/SC 9/WG 2. A good, fresh read, highly recommended.