Which of the following is not a dispatch code listed?

The selected answer is notable because the dispatch code 10-90 is not widely recognized as part of the standard ten-codes used in dispatch communication. The ten-codes, or Ten Signals, are designed to standardize communication in law enforcement, emergency services, and other dispatch systems, providing brevity and clarity.

10-92 generally relates to a specific report type, such as a vehicle stop or an incident report. Similarly, 10-91 refers to another commonly understood code, such as a homicide investigation or related situation. On the other hand, 10-99B could refer to a specific aspect of a situation involving an emergency or urgent directive, demonstrating the diversity and functionality of ten-codes.

In contrast, the absence of acknowledgment or recognition for 10-90 within available dispatch codes underscores its discrepancy from standard practice. Thus, recognizing 10-90 as not being a valid or established dispatch code highlights the importance of familiarity with recognized protocols in communication.