If a red sign is displayed without a corresponding GBO item, what must the train do?

• A. Stop immediately
• B. Stop consistent with good train handling and contact the RTC and be governed by their instructions
• C. Proceed at restricted speed
• D. Ignore the sign

Answer: (A)

Red signs are stop signals for train movements. If you see a red sign and there is no matching GBO item to authorize you to proceed, there is no authority to move beyond that point. The safe action is to stop immediately to avoid entering a block, crossing, or area without proper protection. After stopping, follow standard procedure to obtain explicit authorization from the RTC before moving again. Continuing or ignoring the sign would violate the control that sign provides, and moving at restricted speed without clearance isn’t permitted.