Signal 58 indicates what concerning a suspect?

Signal 58 indicates that a suspect is able to hear radio traffic. This is an important alert for law enforcement personnel, as it implies that sensitive information being transmitted over the radio may be audible to the suspect, potentially compromising the safety of officers or the success of an operation.

When officers are aware that a suspect can hear their communications, they can take necessary precautions to communicate in a secure manner or change strategies to ensure their safety and the safety of the public. This alert is particularly critical in situations involving high-risk or volatile encounters.

The context surrounding the other options highlights their distinct purposes within law enforcement communications, but they do not convey the particular caution of a suspect listening to police radio, which is why knowing Signal 58 is essential for operational security.