What action should be taken when approaching an Approach Sign?

When approaching an Approach Sign, the correct action is to prepare to stop at the Working Limits Stop Sign. This sign serves as an important warning to the locomotive engineer that they are nearing limits or restriction points where a stop is required. It is crucial for the engineer to reduce speed and be ready to stop in accordance with the signal to ensure safety and compliance with operational protocols. This action underscores the importance of vigilance and readiness to respond to upcoming signals or changes in track conditions, maintaining the safety of the train and its passengers.

In contrast, proceeding at maximum authorized speed would jeopardize safety and preparedness. Immediately stopping may not be necessary if the Working Limits have not been reached, and maintaining current speed does not account for the warning the Approach Sign indicates. Thus, preparing to stop ensures adherence to safety protocols and effective train operation.