Over the last few weeks, CSX has been installing new signaling in Palmer in conjunction with preparation for Positive Train Control.
Hooded traffic light configuration color-light signal heads have been installed to replace the Conrail-era triangular pattern light signals.
The Conrail-era signals were activated in July 1986 when the single-tracking of the Boston & Albany between Palmer and Springfield. The interlocking at Palmer was then designated CP83.
CSX’s new signals haven’t been activated yet and I’ve been making photos of the transitional between old and new hardware.