N/A

From the english rules, top of page 19

Scoring the St.Petersburg railroad:
The spaces on this railroad are scored like those on the Trans-siberian.
Important note for this railroad: when a player reaches space 7 of this railroad with his gray rail
and a locomotive, the value of all scored spaces on his St.Petersburg railroad are doubled.

In the Italian rules, there is write:
"Se raggiungete la casella 7 della ferrovia di San Pietroburgo con il binario grigio e una locomotiva,
i punti vittoria forniti dalle caselle di questa ferrovia vengono raddoppiati durante le fasi dei punteggi."
Google traslate:
"If you reach the 7th district of St. Petersburg with the gray track and a locomotive,
the victory points provided by the boxes of this railroad are doubled during the stage of the scores"

In my match "table #34385192" my end point was 22, for me I must end whit 30 point.

St Petersburg shows 42 points.

But I do have the doubler for brown 3 points and beige 6 points and white 10 points (in the german rules it says that this count for the tableaut and not only for transsiberian!).
And I reached with the grey the field eight. And the loc activates field 7. So double (x2) points of the track.
So Grey at 8, Brown at 4, beige at 2
I thought it is then (only counted the colourful fields - not until the beginning - I added the steps to see it :-) )
beige (6+6) x 2 = 24
brown (3+3) x 2 = 12
grey (1+1+1+1) x 2 = 8
made in sum 44.

It is not about the 2 points - it is about the logic, because you plan with the rules your scores, aren't you?

Perhaps as additional hint you could make a possibility to see the detail points of each track? Helps a lot of players, I think.

Thank you for all your work :-)