Originally Posted by Ace:
One loco on each end of a train would make a sleek bi-directional train.
In real life I suppose one unit is enough for a typical push-pull service.
MARC and VRE are known to put engines at each end, usually is something is up with the cab car and it can't lead. MARC provides excursion trains for the Brunswick MD Rail Festival and has engines at each end. MARC has been known to run some funny looking trains, mixing single level cars with tri-level cars. Lately they have a train running with the MP36's coupled together back to back. Looks something like an old F unit AA set.