What method can be used to ensure the aerial device is aligned before lowering it into its cradle?

Using markers or sensors is the most effective way to ensure that the aerial device is properly aligned before being lowered into its cradle. This method provides a reliable visual or electronic guide that indicates if the device is in the correct position. Markers can be placed strategically on the aerial apparatus and its cradle to create alignment points, while sensors can provide real-time feedback on the position of the aerial device during the lowering process.

Visual checks only are dependent on the operator's perception, which can vary and may not be as precise as using dedicated alignment tools. Audio alerts, while useful for conveying important information, do not provide any tangible guidance for alignment. Manual measurements can be time-consuming and may introduce human error, making them less efficient than automated systems. Therefore, employing markers or sensors ensures a higher level of accuracy and efficiency in aligning the aerial device for safe operation.