At the close of each transmission to which response is expected?

At the close of each transmission to which response is expected?

• A. Out
• B. Roger
• C. Emergency
• D. Over

Answer: (D)

The key idea is signaling that you’ve finished speaking and are awaiting a reply. In rail radio communication, you end a normal transmission with “Over” to indicate you’re done and expect a response. Over is the best choice because it explicitly invites a reply. “Out” means you’ve finished and do not expect a response. “Roger” acknowledges that a message was received, but it doesn’t request a reply. “Emergency” is reserved for urgent situations requiring immediate action, not for routine closings. So, at the end of a transmission where you want a response, you say “Over.”

The key idea is signaling that you’ve finished speaking and are awaiting a reply. In rail radio communication, you end a normal transmission with “Over” to indicate you’re done and expect a response.

Over is the best choice because it explicitly invites a reply. “Out” means you’ve finished and do not expect a response. “Roger” acknowledges that a message was received, but it doesn’t request a reply. “Emergency” is reserved for urgent situations requiring immediate action, not for routine closings.

So, at the end of a transmission where you want a response, you say “Over.”