plywood display boards

I would like to create some plywood destination boards. I think its not more, then text textures, but you may know that here is no Ibis and other thing like that, only a plywood containing the number and the two terminus.
Do you think, it would be possible to set both terminus like on the images below at the same time?
After I solved this: Maybe the passangers won't get on on the way back while the destination not changed.

Thanks for help in advance!

Pictures:
http://n2.vatera.hu/photos/92/e4/8e55_1_big.jpg (Debrecen old)
http://bkvtablak.gportal.hu/gindex.php?pg=31677352 (Budapest old) Open point: red numbers with brackets also possible some way? From ca. 70-s to 2008 Express buses was marked like this)

Yes, it seems to be possible at the same time. Theoretically, a plywood destination board could be the "Side display board", acting like a Rollsign.
But I think it would be quite tricky to get this working into OMSI. But I see that as impossible.

Greetings!