Heritage unit

UP 1995 is a SD70ACe owned by the Union Pacific Railroad painted in the Chicago Northwestern Railroad (one of the many railroads acquired by UP).

Amtrak has six heritage units, each painted in one of Amtrak's former paint schemes. GE P42DC locomotive #145 (pictured) is painted in Amtrak's phase III scheme.

Norfolk Southern has 20 heritage units, 10 ES44AC & 10 SD70ACe locomotives painted in predecessor railroads. One of Norfolk Southern's units #8099 painted in Southern Railway livery

A heritage unit is a railroad locomotive painted in an honorary paint scheme, usually the paint scheme of a now-defunct railroad that merged with or was acquired by the locomotive's owner. The Union Pacific Railroad painted 6 EMD SD70ACes in stylized paint schemes of 6 of its predecessors between 2005 and 2006. The Norfolk Southern Railway did the same in 2012 with 20 of their locomotives. 10 of them being EMD SD70ACes, while the others are being GE ES44AC units. For its 40th anniversary in 2011, Amtrak painted 4 GE P42DCs, a P40DC, and an EMD F40PH converted to a NPCU into its older paint schemes.