How do load weighing devices affect hall calls?

Load weighing devices in elevators are designed to assess the weight of the load within the car. When an elevator is determined to be fully loaded, it can bypass hall calls for efficiency and safety reasons. This means that if the elevator is at capacity, additional calls for service from hall buttons will not be acknowledged until the weight decreases, thus preventing overloading and ensuring safe operation.

By allowing fully loaded elevators to bypass hall calls, these devices optimize traffic management within a building, as the elevators can continue to service other calls instead of stopping repeatedly when already at capacity. This contributes to a smooth flow of elevator service, particularly in high-traffic areas.

The other options do not accurately reflect the function of load weighing devices. For instance, they do not entirely prevent hall calls or enhance response times; instead, they manage operational efficiency based on load capacity. Similarly, they do not allow for extra stops but focus on maintaining safety and service balance based on weight.