CODE 3 Victim suffering serious injury. Do not transmit this signal for minor injuries. The following will respond. Officers transmitting a 10-75 shall also state if it is for a fire or emergency and if a building is involved along with the type of building. The Initial notification by field units of a hazardous materials incident.
Responders are to proceed with caution to avoid entering a restricted area.
Code will transmitted by the Incident Commander after size up and evaluations of the incident. An incident confined to a small area and which does not pose an immediate threat to life or property. An incident involving a greater hazard or larger area which posses a potential threat to life or property. Other signals should not be given with the 10-84 except where the situation is apparent on arrival. This signal must be followed within 5 minutes by a preliminary report including the appropriate radio code signal or additional information by first arriving unit.