Elevator systems

An elevator system (201) comprising:

• a hoistway (217) comprising a landing (225A-225C) which comprises a landing door (227A-227C);
• an elevator car (203), comprising an elevator car door (229), arranged to move within the hoistway (217);
• a first safety switch (231;
• 233) configured to indicate a first category of potential hazard in the elevator system (201);
• a second safety switch (239) configured to indicate a second category of potential hazard within the elevator system (201);
• and
• a controller (215) configured, when the first safety switch (231;
• 233) is triggered, to:
• stop movement of the elevator car (203);
• determine whether the elevator car (203) is located anywhere within an unlocking zone (253) in the hoistway;
• and
• if it is determined that the elevator car (203) is located anywhere in the unlocking zone (253), to allow the elevator car door (229) and landing door (227A-227C) to be opened;
• the controller (215) is further configured, when the second safety switch (239) is triggered, to:
• stop movement of the elevator car (203);
• and
• prevent the opening of the elevator car door (229) and landing door (227A-227C) irrespective of whether the elevator car is in the unlocking zone (253).