That's traffic sign recognition (TSR) means you got the lane assist camera and possibly had the VCDS to enable it. I thought they were all turned off as they left Seat these days, possibly hidden hands enabled it for you in the
dealership. Thread on the standard
Ateca side and a
resource on
how to do it yourself with VCDS tools but can only be done with cars that have lane assist. It uses the high definition camera to read the traffic signs dynamically and can give you warning tone if you speed by a predefined amount over you set. I find it very good but if you use ACC to lock onto the car in front as the youngsters do any miss reading may slow you down. I don't so that's not an issue.