This has probably come up before but do you think it is taught or necessary to look over your shoulder to check blindspot when changing lanes on the motorway?
I just need to add an edit. I’m specifically referring to looking over your shoulder on a motorway. Checking mirrors and blindspot is not under question
If you’re on their left, can you see their face in their side mirror. If you’re on their right, slow down or speed up so no part of your vehicle is along side theirs.