Which of the following is NOT a type of radio traffic used in firefighting?

In firefighting radio communications, various types of traffic are used to ensure that messages are conveyed clearly and effectively, especially in high-pressure situations. Routine traffic refers to standard, non-urgent communications that can be addressed at any time without immediate priority. Emergency traffic is designated for urgent situations that require immediate attention, such as calling for assistance or relaying critical information during life-threatening scenarios. Priority traffic is used when certain communications have a higher importance level than routine messages but do not reach the urgency of emergency traffic.

Redundant traffic, however, is not recognized as a standard category of radio traffic in firefighting operations. While redundancy in communications can be important to ensure messages are received, the specific terminology associated with firefighting radio communications does not include this term as a recognized type. Thus, identifying redundant traffic as not being a type used in firefighting communications aligns with established practices in the field.