I think it might start at 2 or 3 minutes, but from then on it's in 1 minute increments up to at least 10, and I think even 15 minutes. I believe the maximum on

I think it might start at 2 or 3 minutes, but from then on it's in 1 minute increments up to at least 10, and I think even 15 minutes. I believe the maximum on the system is 120 minutes delay, after which (or if it's not sure) it switches to "Unbestimmte Verspaetung" (unknown delay). You can certainly find a 4min, a 5min, and a 6min on the linked page. The message "Bitte nicht / einsteigen" (please do not board) always used to be split over two flaps. This caused some humor whenever the first one got stuck, so what was supposed to read "Olten / Basel" ended up as "Bitte nicht / Basel" which roughly reads as "Please don't take me to Basel!", a sentiment that a lot of people in Zurich would agree with.