If communication fails before the "Time effective" has been given the train must?

If communication fails before the "Time effective" has been given the train must?

• A. Stop immediately
• B. Not proceed nor be given permission until communication has been reestablished
• C. Proceed with caution
• D. Notify the dispatcher

Answer: (B)

Movement authority is only valid when you have clear authorization from the dispatcher at the designated time. If the communication link is lost before that Time Effective is issued, there’s no valid permission to move. The safest course is to hold and not proceed until communications are reestablished and a new Time Effective with proper authority is issued. This prevents moving without confirmed clearance and avoids conflicts with other traffic. You should inform the dispatcher about the loss of communications, but you must not move or assume permission until contact is reestablished.

Movement authority is only valid when you have clear authorization from the dispatcher at the designated time. If the communication link is lost before that Time Effective is issued, there’s no valid permission to move. The safest course is to hold and not proceed until communications are reestablished and a new Time Effective with proper authority is issued. This prevents moving without confirmed clearance and avoids conflicts with other traffic. You should inform the dispatcher about the loss of communications, but you must not move or assume permission until contact is reestablished.