Which incident is indicated by the code 904?

The code 904 is used specifically to indicate a structure fire. This classification is critical within emergency response systems, as it provides first responders with immediate context regarding the situation they are heading into. Understanding this code helps in effectively mobilizing the necessary resources and personnel required to address the severity and potential hazards associated with a fire incident in a building or similar structure.

In contrast, the other codes serve distinct purposes within the communication system. Traffic congestion refers to issues related to vehicular flow and does not imply an emergency situation like a fire. Medical aid is concerned with health-related emergencies, such as injuries or medical conditions requiring immediate attention. Animal information deals with incidents involving animals, which do not pertain to structural emergencies. Thus, the unique designation of code 904 for structure fires underscores its importance in emergency management and response.