Every accident is an accident too many. That is why the B-Class is equipped with numerous active safety features designed to help prevent accidents from occurring in the first place. Airbags, crash-responsive head restraints and crash-responsive emergency lighting are all part of the passive safety system. Intelligent systems such as the ESP® Electronic Stability Program, the ABS anti-block system, Brake Assist (BAS) and adaptive brake lights help you to better master critical driving situations.