If you are referring to the 'dynamic safety' package then it's basically a bunch of equipment that prevents you from crashing, or at least mitigating the damage to the occupant(s). The most common features include Lane-Assist (stop you from drifting sideways into other lanes).
What is safety capability?
Capability 1: The ability to accurately identify problems — In safety, problems are risks. ... The highest priority is not always the biggest risk or the most frequent accident type.Apr 1, 2011