On a sunny morning, CSXT SD70MAC #4705 flies at 60MPH under the QD-103 raised NYC signals in Lake City, Pennsylvania. Within the past few years, CSXT, as well as a handful of other railroads, have implemented "precison railroading" which bassically means that the railroad is corrupting itself. With that being said, CSX has been replacing the power that was half decent to crappy GEVO's and conjoing trains to make them unbelievably long and heavy. Along with all of those other changes, it doesn't help that most if not all of the signals in the US on Class 1 railroads are/getting replaced.
Railroads in Erie County in Pennsylvania. These include the CSX and NS mainlines, GE Transportation plant and test track, the Buffalo & Pittsburgh, Western New York & Pennsylvania, and a small section of Bessemer & Lake Erie (CN).