The dreaded door restrictor. It's been part of elevator systems since the early 1990s. And while it keeps the riding public safe, it presents a unique challenge for firefighters trying to open an elevator car door during emergencies. Here's what it does: The door restrictor prevents passengers from self-evacuating when the car isn't aligned with a landing, typically more than 18 inches above or below floor level. When the car is between floors, the restrictor locks the doors. Why? To prevent pas
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