Why is a double shot GT considered less restrictive than a single shot GT?

Why is a double shot GT considered less restrictive than a single shot GT?

• A. A double shot GT approaches a red signal
• B. A double shot GT approaches a yellow signal with an illuminated S
• C. A single shot GT approaches a green signal
• D. A single shot GT has no yellow signal indication

Answer: (B)

A double shot GT is considered less restrictive because it typically indicates that the train is approaching a yellow signal with an illuminated S, meaning the train can prepare to proceed at a lower speed or be ready to stop if necessary. This situation allows for more operational flexibility and means that the train is not in as immediate threat of a stop as it might be with a higher signal aspect. In contrast, other scenarios listed imply more restrictive conditions. For example, a single shot GT does not offer a yellow signal indication, which generally means the train would be approaching a condition where it may be required to stop or may not proceed as smoothly. Understanding the different signal indications helps train operators make better, safer operational decisions based on the context of the situation indicated by the signals.

A double shot GT is considered less restrictive because it typically indicates that the train is approaching a yellow signal with an illuminated S, meaning the train can prepare to proceed at a lower speed or be ready to stop if necessary. This situation allows for more operational flexibility and means that the train is not in as immediate threat of a stop as it might be with a higher signal aspect.

In contrast, other scenarios listed imply more restrictive conditions. For example, a single shot GT does not offer a yellow signal indication, which generally means the train would be approaching a condition where it may be required to stop or may not proceed as smoothly. Understanding the different signal indications helps train operators make better, safer operational decisions based on the context of the situation indicated by the signals.