If communication is known to be failing, what may be issued to pass a stop signal?

• A. Form D Line 19 may be issued
• B. Form D Line 7 may be issued
• C. Form D Line 13 may be issued prior to train arriving at the Stop Signal
• D. No form

Answer: (C)

When communication fails, you must have written authorization to move beyond a stop signal. That authority is carried on Form D, and there is a specific line on that form that covers passing a stop signal. Issuing this authorization before the train reaches the stop signal ensures the crew has clear, recorded permission to proceed under the dispatcher’s intent, along with any required restrictions, so movement remains safe and orderly.

The other options don’t provide the necessary written authority to pass the signal, or they address different situations, so they wouldn’t be appropriate when comms are known to be failing.