Hi, I am really new at this so I have a question about Switches. I have installed track in my boys room and in my girls room. Two ovals that connect. I want the switches in each room to auto switch. IE, make a loop in the boys room come back around go into the girls room and do the same. The way I see it is when the train gets to a certain point in the track it tells the turn to switch. I think that is simple enough. I had seen it done this week at the National train show in Portland with an O gauge trolly.