Through a combination of hydraulic and electronic technologies, TRW's Active Dynamic Control (ADC) system neutralizes a vehicle's "roll" (or tipping sensation) and provides a softer ride feel. "Roll" refers to a vehicle's lateral acceleration during a turn that forces the vehicle away from the center of the turn. In an ADC equipped vehicle, stabilizer bars, which are used to link both sides of the suspension, are connected to computer-controlled actuators that use hydraulic pressure to move the ends of the bars. When the accelerometer sensor detects lateral movement during cornering, a computer signals for increased hydraulic pressure. This hydraulic pressure, produced by the power-steering pump and valve, powers the actuators - thus reducing body lean and holding the vehicle flatter. When the vehicle is moving straight ahead, the system decouples the stabilizer bar from the hydraulics for optimal feel and a smooth ride. Figure 1 Without activation of TRW's ADC system, the vehicle leans and has a  higher roll over potential Figure 2 Vehicle body roll is lessened when TRW's ADC system is engaged The ADC system allows the use of softer spring rates thereby providing a more balanced, comfortable driving experience. Typically, vehicle lean is minimized up to 0.4 G's (gravity force), the force the vehicle usually encounters at moderately hard cornering. Beyond that, computer-controlled actuators ease off and allow more body lean, indicating to the driver that the vehicle is beginning to corner hard and may be losing traction. ADC is ideal for many platforms, including: •  Sport Utility Vehicles (SUV's) - off-road ride is enhanced •  Vans - tipping during cornering is reduced •  Sports Cars - handling and balance are improved