for example,I live in Lausanne, and I have a yearly pass for zones 11 and 12.
On Saturday, I need to travel to both Romainmotier and Chexbres. SBB tells me that I can get a Mobilis day pass with 10 zones, which goes through Lausanne, so that sounds nice. Except then I am also paying for zones 11 and 12, which I already “paid for”… But I don’t think there is any interface where you can specify exactly which zones to pay for, you always have to specify a from-to… Similarly, if I take the train from Lausanne to Nyon… I could buy the ticket from Renens instead, then I save one zone, but I am still paying for zone 12. But now I need to look up on the map which stop is right outside Renens to buy from that stop (which would be different if I were going to Vevey of course)…
could i just pay the ticket for zone 10, how could I but such a ticket?