What must Train 119 do after hearing Train 17M's emergency announcement?

After Train 17M’s emergency announcement, Train 119 must operate at Restricted Speed. This is essential because when an emergency situation is declared, the safety of all trains in the vicinity is a priority. Operating at Restricted Speed ensures that the train can stop short of any obstruction, which is critical in emergency scenarios where the conditions ahead may be unknown or hazardous.

When a train is instructed to operate at Restricted Speed, it means they must proceed cautiously and be prepared to stop within half the range of vision, effectively allowing them to respond in a safe manner to any sudden changes or obstacles. This protocol helps to maintain safety and control on the tracks during emergencies, ensuring that any potential issues can be managed promptly and effectively.