Electronic Stability Control (ESC)

Research conducted in the USA has shown that Electronic Stability Control could reduce the risk of single vehicle crashes by about 40 per cent and up to 67 per cent for 4WD and sports utility vehicles. To be effective a vehicle must be driven at a speed which is suitable for the conditions. For example on wet or gravel roads tyre traction is less than on dry roads and the vehicle’s speed should be reduced accordingly. Electronic Stability Control cannot change the laws of physics and a driver can still lose control if a vehicle is driven unsafely.
NSW Government Transport Roads and Maritime Services

Even when all vehicles eventually are equipped with ESC, rollover crashes will not be eliminated. NHTSA estimates that 5,000 to 6,000 rollover fatalities per year would still occur in a fleet fully equipped with ESC. ESC can help a driver maintain control in some situations but not all. For example, ESC may not prevent a rollover-initiating impact with another vehicle or with a roadside obstacle, tire failure, or complete loss of traction with the road surface due to weather conditions. Vehicles with ESC still need strong roofs and effective restraint systems to protect occupants in rollover crashes.
Insurance Institute For Highway Safety – USA