What is the consequence of ignoring a Call for Orders signal?

Ignoring a Call for Orders signal poses significant safety risks and operational challenges within railway systems. When a train engineer does not respond to this important signal, it is crucial for them to prioritize safety by stopping the train. This is essential because a Call for Orders typically indicates that the engineer must await further instructions, which could be critical for the safe management of train movements, especially in busy or complex operational environments.

If the signal is disregarded, potential conflicts on the tracks could arise, leading to dangerous situations, including collisions. Thus, the actions taken when a Call for Orders signal is ignored are heavily weighted towards ensuring safety and maintaining control over train operations. Stopping when this signal is acknowledged helps to confirm that the engineer is aware of their surroundings and ready to receive the necessary updates to proceed safely.

In this context, the other options do not directly address the immediate safety procedures required upon receiving a Call for Orders signal. Legal penalties and passenger notifications, while important, do not represent the immediate and necessary action that the engineer must take to ensure safety on the tracks.