When should a dispatcher hold back radio traffic?

The correct choice is holding back radio traffic during significant incidents requiring focused communication. In high-stress situations such as emergencies or critical incidents, it is crucial for dispatchers to manage communication effectively. By limiting radio traffic, dispatchers ensure that vital information can be relayed without confusion or interruptions. This allows first responders to concentrate on their tasks without the distraction of unnecessary chatter or background noise, which can be detrimental during high-stakes scenarios.

In contrast, regular communication updates, notifications about a suspect in custody, or interactions with the press do not typically warrant the same level of urgency or the need to minimize radio chatter. These situations can generally proceed without the need to hold back traffic, as they do not compromise the immediate response or safety of personnel on the scene.