What goes on train peoples. I’m a heavy railfan as most of you are, and I watch alot of youtube videos of trains and every time I watch these videos I always see these names of each train for example C-WECA (made it up) I know all the letters to each symbol but what I don’t understand is how do people know which units (for example UP 1989) go to this train symbol I’ve tried so many websites and no one has given me the answer. If you guys know I’d truely appreciate it. BTW I railfan in Missouri if you were wondering. Thanks again
Sincerely
Ryan LaPlaca<