An odd one i discovered when building a custom standard scenario on any route. I have noted that when you enable the class 67 as a player driven service the roller blind unfolds and the driver is visually present. For the Ai service's you create the roller blind remains down. This is regardless of approach, for example I know the DTG class 43/HST doors only open on Ai services when near said service within a 60 second window of passing (if they are set to unload passengers when you pass them). The class 67 ai services the roller is down all the time, regardless of when/how you pass them. Opinions welcome
Nothing you can really do, this is script controlled. I don't have the AP 67 EP (yet) - maybe it's fixed there.