Amtrak has recently activated Rule 562 cab signal operation between OAK and BUSH interlockings on the Aberdeen peninsula in Maryland retiring three intermediate wayside signal locations in the process. This follows a similar project between PRINCE and BACON interlockings that took place in 2018.
The three wayside signal locations are the Milepost 65 signals just north of the Aberdeen station, the Milepost 67 signals near the defect detector in Short Lane and the Milepost 69 signals in Perryman.
This project has been anticipated for the better part of a decade, but according to my sources was waiting on a larger project to build a new interlocking or interlockings to improve routing around the Aberdeen station. It is possible that with both the Susquehanna River Bridge and Baltimore Tunnel replacement projects now underway, Amtrak lacked the spoons for a new Aberdeen interlocking.
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