What must the Dispatcher provide before any movements not governed by fixed signals?

The correct response entails that the Dispatcher must provide permission for immediate movement only before any movements not governed by fixed signals. This requirement is crucial because it ensures that all personnel involved in the operation are aware of and agree to the specific movement taking place at that moment.

Immediate permission is necessary to maintain safety protocols and efficient coordination in the absence of fixed signals, which typically provide guidance and restrictions for train movements. By requiring this specific permission, the Dispatcher can effectively manage the flow of trains and local operations, ensuring that no conflicting movements occur that could lead to accidents or disruptions.

In contrast, providing permission for multiple movements could lead to complications and a higher risk of accidents, as other movements may occur simultaneously, increasing confusion. Likewise, having no permission required or general permission for extended periods could compromise safety by not ensuring that the movement is monitored or authorized at the time it occurs. This structured permission is key to maintaining safe operational practices.