Ten-codes are shorthand used on radios to convey common actions quickly. The code in question is specifically used to request or confirm the exact current time. This matters because accurate timestamps are essential for incident timelines, evidence handling, and coordinating with other units or agencies. By using this code, you prompt everyone involved to synchronize clocks and report the precise time of events. Keep in mind that meanings can vary by agency, so always refer to your unit’s code list.

The main idea here is recognizing a verification signal that confirms a specific reference number. When you need assurance that the mapping number you’re using is correct, the only signal that truly confirms it is the one that explicitly states “Confirmation on mapping number.” This is because it flags that the mapping number has been checked and validated, leaving no ambiguity about which reference you’re working with. The other signals point to different things: “Incident number” identifies a separate event, not the validation of the mapping reference; “Not wanted” reflects a status about a person or a case, not the mapping reference; and “Communicable Disease Present” conveys a health status unrelated to mapping verification. So the explicit confirmation on the mapping number is the correct signal because it directly communicates that the mapping number has been confirmed.

When a deputy needs a traffic investigator, the code sent to dispatch is the one that flags the requirement for specialized traffic investigation at the scene. This code signals that the incident requires in-depth examination of the crash, evidence, measurements, and scene reconstruction, not just a routine response. It ensures the right unit is dispatched promptly to conduct the traffic investigation and gather the necessary details for reporting and potential legal follow-up. The other codes point to different needs, such as medical transport, general assistance, or non-investigative responses, and don’t indicate a request for a traffic investigator.

Reading a city grid to locate the first northbound numbered street along a named axis: start at the center and move north along the Central corridor. Streets that have numbers appear as you go away from the center, and the numbers increase as you head farther north. The first numbered street you encounter on this path is the 4th on the North Central axis, which is why the correct choice is 4th N/Central.