Vehicle Stabilility Control works

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VSC-Vehicle Stability Control also known as ESC,DSC, ESP,VDC by different manufactures.  VSC works to keep the car travelling in the intended direction under the control of the driver even when they may have to take rather severe evasive action to avoid an accident, or if they misjudge a corner. The VSC sys helps prevent the vehicle from sliping sideways as a result of strongfront wheel skid or strong rear wheel skid during cornering.
VSC constantly monitors wheel speed, steering angle and vehicle posture and if it starts to become unstable, VSC momentarily activates the brake on one wheel to move the car on its rotational axis and back onto the correct line. If required it will also control the throttle butterfly to reduce engine torque, all totally seamless.
When  the road surface is slippery and driver can't control it, the car has lost grip and has started to understeer around the bend.  the driver backing off the accelerator and applying the brakes may only make it worse. So VSC activates,VSC employs the sensors, actuators and computer electronics of the braking and traction control sys to help anticipate and minimise skidding when cornering. VSC also adjust the power applying the brake to one wheel to anchor it , rotate the car back to help ensure the vehicle maintains the line you intended.
The 2006 IIHS study concluded that VSC reduces the likelihood of all fatal crashes by 43%,and single-vehicle rollover by 77-80%. There you go, when you set out to search your next car, please consider the vehicle eqipped with VSC sys. It's really saving lives.