Hot dry California sun on the afternoon of August 6, 2016.
We were in that Mecca of train watching places: California’s Tehachapi Pass.
A Union Pacific freight with Tier4 GE’s was working its way timetable east, ascending through Tunnel 2 near Bealville.
At the back of the train was this nearly new unit working as a radio controlled distributed power unit.
Tracking the Light Posts Daily!