Far enough
An marker (DE-DM Engine) indicates where the engineer should spot the train. "PD" tower used to be on the right. It was the furthest east tower on the Branch. It's been removed as if it was never there. Babylon is now the furthest east tower and remotely controls the switches at Patchogue and Speonk.
Signals are for the entrance to PD2 interlocking.
The track on the left goes to the yard.