What does the radio code 10-21 signify?

What does the radio code 10-21 signify?

• A. Call on the phone
• B. Arrived
• C. Report to
• D. Disregard

Answer: (A)

Ten-codes are compact ways to convey specific actions in law enforcement radio traffic. The meaning of 10-21 is to establish or request a telephone contact—essentially, “call me on the phone” or “contact me by phone.” This makes it the best choice because it directly indicates initiating or requesting a phone call, which is a distinct action from simply being at a location, reporting to someone, or disregarding a directive. The other options describe different actions (arriving, reporting to, or disregarding) that are not about making or requesting a phone contact.

Ten-codes are compact ways to convey specific actions in law enforcement radio traffic. The meaning of 10-21 is to establish or request a telephone contact—essentially, “call me on the phone” or “contact me by phone.” This makes it the best choice because it directly indicates initiating or requesting a phone call, which is a distinct action from simply being at a location, reporting to someone, or disregarding a directive. The other options describe different actions (arriving, reporting to, or disregarding) that are not about making or requesting a phone contact.