Hi everyone I would like to inform you of this game changing find that I found which will enhance your railroading experience using train simulator. I originally posted this on the steam discussion board and thought that you guys and girls would like to know. you will find me on steam as theskipper98.
First of all you run a route in quick drive, then go to the build editor and clone the quick drive route which will read copy of quick drive scenario. Then open the copy of quick drive scenario in the scenario editor in rw tools and pick what service that you want to drive in the opposite direction and save the quick drive scenario as a Free roam scenario and the result is you now have a random quick drive. You can do this every time that you run a quick drive route by cloning and creating a Freeroam scenario in rw tools. Also when you come of route you can pick up freight wagons and shunt and drive anywhere and jump to different services.
I really hope that it helps all you railway enthusiasts.

Hi everyone here is my guide showing you step by step how to run AI trains in a Free Roam scenario. I can only upload five jpegs at a time, so I will add the other screenshots to my next post.
First of all you run a route in quick drive, then go to the build editor and clone the quick drive scenario which will read copy of quick drive scenario. Then open the copy of quick drive scenario in the scenario editor in rw tools and save the quick drive scenario as a Free roam scenario and the result is you now have a random quick drive with AI trains. You can do this every time that you run a quick drive route by cloning and creating a Freeroam scenario in rw tools. Also when you come of route you can pick up freight wagons and shunt and drive anywhere and jump to different services.
Also you must have RW tools which is now freeware to change the Quick drive Scenario to Free roam for this to work.