Are industry branch lines typically off a siding? Is it not uncommon on prototypes to see industry lines branch right off the main? Here's a little section of railroad on my layout I'm trying to figure out how to layout. At first I just had the branches come right of the main, but I think it makes more sense to add a siding on each side of the main. With the siding a train could just drop some cars off for a local to come spot later, or for local runaround, etc... or all the sidings overkill? I'm thinking the lower siding would/could also be used as an additional passing siding for mainline trains.