Hello z7z
Welcome to the SBB Community.
We are a customer support page run by volunteer travel experts. We are not the SBB.
Are you from the U.S.?
On long-distance trains in Switzerland (IC, IR, EC, TGV, ICE, RJX), you can legally board the first class with a second class ticket, but you will have to pay the surcharge when the ticket inspector arrives. SBB is offering the possibility to upgrade on board the train; it is a service in favour of their customers.
Please refer to the SBB website for further details:
https://www.sbb.ch/en/tickets-offers/tickets/point-to-point-tickets-switzerland/class-upgrades-supersaver-class-upgrades/class-upgrade.html

All over Europe, with any railway company, 1st class coaches are marked with a big “1” at the entrance door, and 2nd class coaches with a big “2”. At multiple places inside the coach, you can find the “1” or “2” indicating the travel class. That’s how it works on our continent.
In addition, the house rules are displayed prominently on every boarding platform, informing passengers that 1st class can only be used with a 1st class ticket.
In my opinion, as a tourist, you would be well advised to find out about local customs and traditions before you travel to a country. Thus, even as a tourist, it is your responsibility to be in possession of a correct ticket.
In Switzerland, 99% of the railway customers who travel in 1st class want to travel in 1st class and also have a ticket for the ride in this class. People here would not appreciated if everyone is being asked whether they want indeed travel in 1st class. Our railway system is mass transit.
CHF 10 was a bargain. Normally, you have to pay the difference between a first-class and second-class ticket, and on local trains there is an additional surcharge of CHF 75 as the on-board upgrade option does not exist.
Kind regards,
Roland
