If an elevator stops suddenly between platforms, the operator should immediately:

When an elevator stops suddenly between platforms, the operator should call maintenance personnel immediately. This action is crucial for ensuring the safety of anyone who may be trapped inside the elevator, as well as for addressing any mechanical issues that could have caused the sudden stop. Maintenance personnel are trained to handle such situations safely and can assess the elevator's condition, ensure that it can be safely operated again, or assist in safely evacuating any passengers.

Calling for help anonymously does not prioritize the immediate need for specialized assistance and might prolong the situation. Continuing to operate the elevator without assessing the issue could exacerbate any existing problems and put passengers at risk. Ignoring the situation and waiting is not advisable, as it can lead to confusion and increased anxiety for those trapped inside, and does nothing to resolve the issue at hand. Therefore, quickly contacting maintenance personnel ensures a prompt and professional response to the emergency.