I wonder how the map handled the accuracy issue of the timetable data: the public timetables are only accurate to the minutes, but the trains on the map are not only arriving / departing at 0 second. I believe accurate timetables that are accurate to 5 seconds (actual accuracy) are not published anywhere. I'm now very curious how accurate the trains on the map are, as there might be up to 55 seconds of error.

I don't have too many opportunities to take the trains nowadays, and when I had to take the trains I always forget to check this.