When issuing a traffic alert, what word should conclude the transmission if a conflict exists?

When issuing a traffic alert in air traffic control, it is essential to communicate urgency and prompt action to ensure safety. The appropriate word that should conclude the transmission of a traffic alert if a conflict exists is 'immediately.' This term conveys to the pilot the necessity for prompt awareness and action regarding the potential traffic conflict. Using 'immediately' indicates that the situation requires the pilot's immediate attention, allowing them to understand the seriousness of the alert and respond accordingly to maintain safe separation from other aircraft.

In contrast, other terms such as 'notify,' 'proceed,' or 'affirmative' lack the necessary emphasis on urgency in a critical situation involving traffic conflicts. Therefore, 'immediately' establishes the required tone and clarity in communication essential for effective air traffic management.