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Status : Withdrawn
Standard Type : Main
Document No :
Document Year : 2010
Pages : 17
Edition : 3
Section Volume : Vehicle dynamics and chassis components (ISO/TC 22/SC 33.)
The lateral stability test determines the damping characteristic of the yaw oscillation of such towing-vehicle–trailer combinations excited by a defined steering impulse. The combination is initially driven in a steady-state, straight-ahead driving condition. Oscillation of the vehicle is then initiated by the application of a single impulse of steering, followed by a period in which steering is held fixed and the oscillation of the combination is allowed to damp out. Testing is conducted at several constant speeds. Where non-periodic instability is of interest, a steady-state circular test is specified.