Which signal indicates the status is "Out of service; subject to call"?

The status "Out of service; subject to call" is indicated by Signal 3. This signal is used by law enforcement to communicate that an officer or unit is currently not on active duty but can be contacted or called back into service as needed. Understanding signal codes is essential for maintaining effective communication and ensuring that resources are appropriately allocated during incidents.

The other signals correspond to different operational statuses, such as being fully in service or having other specific assignments. Being familiar with these signals allows officers to convey their availability quickly and clearly, which is crucial for coordination and operational efficiency.