The first brake assist system (BAS) was developed by Mercedes-Benz and introduced in 1996. It has been a standard feature on all Mercedes-Benz passenger cars since 1997. Recent statistical analyses of German accident data show significant safety benefits of this technology: Both the percentage of severe accidents involving pedestrians as well as the rate of rear end collisions are lower for vehicles equipped with BAS than vehicles without BAS. The conventional brake assist (BAS) is now completed by radar based adaptive brake assistance functions (BAS PLUS and PRE-SAFE® Brake) which have demonstrated their benefits both in internal and external tests.