CSX FEATURES:
Newly tooled rear slug connection boxes
Large front anticlimber
Mid production with corrugated grilles
Body-mounted side bell
Chessie/CSX style front rock plow
K5 horn
Lit class lights and number boards (effect in DCC)
During the late 1980's, CSX Transportation modified many of their GP40-2's into “slug mothers” that powered RDMT (CSX term, short for Road-Mate) road slugs. The “slug” is a term used for (in most cases) a secondary locomotive that has a removed/deactivated engine but kept it's traction motors. The “mother” unit at slow speeds can produce enough power to provide electric current to other traction motors using the same amount of fuel consumption. The ‘” mother” and “slug” combination can provide the power of two locomotives using a single diesel powered unit. CSX liked the results, and modified many older GP30 and GP35's into road slugs, retaining their cab controls so that they could still be operated in lead position, but without the noise from the prime mover