Which is considered the primary safety feature in elevators?

The primary safety feature in elevators is the emergency brakes. Emergency brakes are crucial because they are designed to stop the elevator from descending in the event of a malfunction or failure of the lifting mechanism. This function is essential for ensuring the safety of passengers, as it prevents uncontrolled falls which could result in severe injuries or fatalities.

In addition to emergency brakes, other safety features also play significant roles in elevator safety but serve different purposes. Leveling devices help ensure that the elevator cabin aligns correctly with the floor to facilitate safe entry and exit, doors and sensors prevent the doors from closing if something is in the way, and alarm systems provide a means for passengers to signal for help in case of an emergency.

However, while all these features contribute to the overall safety of elevators, the emergency brakes are considered the most critical because their primary role is to protect passengers in the most dangerous scenario—an uncontrolled descent.