Quote Originally Posted by denkimi View Post
I'm sure you know, but for those who don't:

They all have a semi automated system that is activated automatically by stopping in the stage. At that point the equipe either has to push the ok button, or the sos button. If they push neither button within a minute, race control tries will suspect an emergency and should stop the stage. That is, as far as i'm aware, the theory.
In practice most cases or just codrivers forgetting to push the button when stuck or replacing a tyre, so race control will first try to contact the equipe or the mashals close by to confirm the situation.
In 2018 Mexico Loeb changed a tyre and they forgot to push the OK button. The stage wasn't automatically red flagged, but I think they were penalized for it.