Active safety features are designed to prevent accidents from happening in the first place. These features include electronic stability control, lane departure warning, and blind spot monitoring. Passive safety features, on the other hand, are designed to protect passengers in the event of a crash. These features include airbags, seat belts, and crumple zones. While both types of safety features are important, active safety features have the potential to prevent accidents from happening altogether, making them a key consideration when choosing a car.