FYI, I asked this question in the beta a while ago.
The response was
“All single track industries should function fine, as there's no ambiguity about where to deliver the product, but unfortunately (as the behaviour is implemented in script) the Living Railroad code has no way to determine where to send the cars.
The good news is that it's relatively simple to support. For scripters, have a look in Industry.gs, where you will find a new variant of AppendDriverDestinations() with a few new parameters, and/or check out the new function on the wiki: https://online.ts2009.com/mediaWiki”
If any of our scripters can explain how to update this in simple terms, it would help!
