What is prohibited for tower operators without proper authority?

Removing authorized appliances from machines is prohibited for tower operators without proper authority because doing so could compromise the safety and functionality of the equipment used in train operations. Authorized appliances are typically integral components that ensure signals and systems operate correctly. Unauthorized removal can lead to malfunctions, which might endanger operations and compromise the safety of trains and personnel.

In the context of a tower operator's responsibilities, it is crucial to adhere to strict protocols that govern the handling of equipment. Only trained and authorized personnel are permitted to engage in actions involving essential machinery, as they possess the requisite knowledge and understanding of the potential consequences.

Altering train schedules, conducting safety inspections, and adjusting signal settings are typically actions that might require specific training or authorization as well, but they focus more on operational aspects rather than directly interfering with the physical components of machinery. Alterations to schedules or inspections typically involve procedures governed by protocols rather than physical manipulation of machinery, which is why the primary concern lies with unauthorized removal of appliances.