What function do elevator door locks serve?

Elevator door locks are crucial for ensuring the safety of passengers and the proper operation of the elevator system. Their primary function is to prevent the elevator doors from opening when the elevator is not aligned with a landing. This is essential because if doors could open while the elevator is in motion or at an unauthorized position, it could lead to dangerous situations, such as passengers stepping out into an empty shaft or onto a lower or higher floor without the elevator being present.

The door locks work in conjunction with the elevator's control system to ensure that the doors can only be opened when the lift is properly positioned at a landing. This safety mechanism helps maintain the integrity of elevator operations and protects users from potential accidents.