Designing the facilities at a customer's location... There is only room for a single ended track to service the customer. If the serving train drives in the forward mode to that track it will have to back out. That may place it in position to only dive backward to the next destination. A "Y" where the customer track (siding) joins the main track is a possible solution. But is that the best or only solution. The objective is to avoid long backing scenarios which I assume is normal rail practice?