Which signal indicates the start of a police officer's duty?

The signal that indicates the start of a police officer's duty is the indication for the beginning tour of duty. This phrase serves as an official cue for officers to commence their responsibilities, aligning with established protocols within police departments. It's a formal acknowledgment that the officer is now available to respond to calls, engage with the community, and perform all necessary law enforcement duties.

In contrast, other options do not signify the start of someone's shift or duty. The "ending tour of duty" refers to the conclusion of an officer's work period, marking when they can hand over their responsibilities. "Wrap The Scene Up" pertains to concluding activities at a specific incident scene, and "Vehicle License Plate Check" is a routine function related to traffic enforcement rather than a signal for starting a shift. Understanding these distinctions is vital for clarity on procedural operations within law enforcement.