STP...
...should run for sure.
As others have said, that
isn't true, unfortunately.
Freight-wise, there are hundreds of STP paths each month
which don't run, and VAR paths are even worse!
This is why Freightmaster Online exists in a world of "free gen";
I spend huge amounts of time manually filtering out over 90% of
the non-running freight services (WTT, VAR and STP) in order to
provide realistic timetables which reflect what runs in real life,
with the added bonus of headcodes, booked motive power,
type of train, etc.
Sorry for the blatant plug!
MARK