I am an Asian research student in the UK. I took part in a European project so that I have to work abroad in Schengen countries. I spent 2 months in the Schengen area, using a tourist visa, from mid-April to mid-June and my visa expired in August.
I flew back to the UK to apply for a new tourist visa and got a new 2-year visa beginning in August. After that, I went back again to continue my work in Schengen countries and spent another 2 months there. Then I came back to the UK without any issues.
I just found out about the 90/180 rule from my friend. According to the 90/180, I have already spent more than 90 days within the last 180 days. So, I'm a little confused why I did not get a penalty when I entered, or does a new visa reset the 90/180?
Next week I have to enter the Schengen country again due to my work. Should I go or did the new visa reset the 90/180 clock?