How are status changes communicated in 900 codes?

• A. By transmitting a short status update and updating the incident log
• B. By broadcasting a loud verbal command
• C. By sending lengthy narrative notes
• D. By posting on public bulletin board

Answer: (A)

Status changes in 900 codes are communicated through a brief radio update and by updating the incident log. The idea is to keep the channel clear and everyone on the same page with a quick, standardized communication. A short status update lets dispatch and nearby units know the current condition, location, and any new actions, while the incident log provides a written, auditable record of when the status changed and what occurred. This combination supports coordination, accountability, and accurate after-action review. Longer narrative notes on the radio would slow operations and create noise, while loud verbal commands or postings on a public bulletin board aren’t practical or appropriate for real-time incident management.