Occupancy indicators on SBB timetables

When the occupancy indicators show "Very high occupancy levels expected" does this mean that there's a chance we won't get on the train, or just that we're not likely to find any seats. Do Swiss trains have limits on numbers or is it like here in the UK where we just squeeze onto a train?

Hi swisscat,

It means that it may be more difficult to find seats, but you will always be allowed to board. If it's really too packed you can just wait for the next train, but I have never experienced that myself.

Good, that's what I was hoping, thank you.

But Arno, is there not an option to reserve a seat? If so how far in advance must this be done?

The timetable shows the trains for the trip you intend to make. If you click the plus (+) icon for a specific connection, the column "Information" will show whether reservations are required (almost never), advised or possible (a bold 'R'). In general, booking seats as early as possible is best, but for trains that do not require to book seats, doing this late is usually no problem as most travelers will not book seats.