D yard tracks 3D: what is feature?

• A. Derail
• B. Westbound low home Je with derail
• C. Westbound low home Je (no derail)
• D. No signal

Answer: (C)

Think of this in terms of how yard access is controlled: the description is telling you the entry signal type, the direction of movement, and whether a derail device is present. A low home signal is a yard-entry signal placed low so it’s visible in the yard environment, and it governs trains moving into or through the yard from the west. The note that there is no derail means there isn’t a physical derail on that track section to stop cars from leaving or entering accidentally; safety in this spot relies on the signal itself rather than a derail device. So the feature being described is a westbound entry controlled by a low home signal with no derail installed. The other possibilities would entail either having a derail or lacking a signal, which doesn’t match the described setup.