McDonald's Lanes

At the McDonald's I usually go to when it is busy people get confused where to wait in line to order as some people have ordered and are waiting to have their orders ready and other people are waiting to order and you don't know who is who. Sometimes a McDonald's employee is there and directs people, but only sometimes. I suppose they do not care much as not too many people, if any, would give up and leave. If you are set on eating from McDonald's you are going to, even if there are many other choices nearby (the respective McDonald's is in a huge mall with a food court and many other eating places).

In order to clear any confusion my idea is to have lanes, painted with 'Ordering' and 'Waiting', same as roads have arrows at some intersections so you know which lane is for what.