Roll Stability Control (RSC) is a stabiliser system that minimises the risk of overturning, for example during sudden evasive manoeuvres or if the car skids.
The RSC system registers if and how much the car's lateral inclination changes. This information is used to calculate the risk of the car overturning. If the car is at risk, its electronic stability control system engages, the engine torque is reduced and one or more wheels are braked until the car has regained its stability.
Under normal driving conditions, the RSC system improves the car's road safety, but this must not be taken as a reason to increase speed. Always follow the normal precautions for safe driving.