Why a crowded elevator passes a waiting floor
An elevator has two kinds of requests: car calls made by passengers inside and hall calls made by people waiting outside. When the car is heavily loaded, its weight sensor can signal the controller that there is little or no safe capacity left. The controller may then bypass some hall calls instead of stopping to invite more people aboard.
That does not mean the elevator has forgotten where its riders want to go. It can keep serving the destinations already selected inside while declining to make a stop that could add passengers.
A stop is more than a pause
Opening the doors creates a chance for more weight to enter the car. If the elevator is already at its limit, even a small group boarding could push it over. The system may also avoid a stop when there is too little room for anyone waiting to board, since stopping would add delay without completing the pickup.
A weight sensor does not count people or judge how tightly they are packed. It measures the load, and the controller uses that information alongside the calls and the elevator’s operating rules. The exact response varies by elevator, but bypassing waiting-floor requests is one way to keep a crowded trip moving without accepting more load.
Why the call may seem ignored
The waiting-floor button still records demand; it simply may not be served by that particular trip. Once passengers get off and the load drops, the elevator—or another car in the system—can respond to the outstanding call.
So a packed car passing by is often making a practical tradeoff: finish the ride for the people aboard before trying to pick up more.
