UP SD90/43MAC paint scheme

Model Railroader Prototype information for the modeler
1

Does anybody know why Union Pacific SD90/43MACs have "f"s on the front of the locomotive’s sides at the bottom?

2

If you are talking about the ‘F’ on the frame at the front of the locomotive, it means that this is the front of the locomotive. All major railroads should have this as it is a FRA requirement.

Jim

3

Thank you! I just wasn’t sure.