text: to update:
  southbound/downhill the posted speed is mostly 80km/h with two lanes, but 25km/h for trucks, for some distance before this.
  shortly before the WT-Waldshut city limits is posted 60km/h transition.
  Despite several attempts turning my head, I was not able to make out any limits for the single lane uphill/north-ish-bound.  maybe later.
  update pending, sometime.