I seen it also Thrusday May 10.
I am waiting for my new (same Day) Canon 10 mp EOS to come back from repair to take some shots of it.
Yes along US 12 you see a lot of railroad action East of Miller to Michigan City, In.
Here are two shots of the bilborad in Indiana I-94 mile marker 13.
When I first seen it all four lights were on steady. When shot they were off.