The Hydraulic Body Motion Control System (HBMC) technology was employed initially in the Nissan Patrol, and subsequently the Infiniti QX. The system was invented and developed by Nissan Motors and was tested on the Nissan Patrol in the Middle East. The system helps reduce body lean while turning for a more comfortable ride. Utilizing hydraulic cylinders located at the shock absorbers, it adjusts roll stiffness by allowing transfer of fluid between the left and right sides of the vehicle through passive weight transfer during normal driving. It also helps reduce bump shock by setting bounce and roll damping forces separately. In off-road conditions, HBMC activates when it senses that a wheel has dropped.