Why are shoulder checks a thing while driving?
I move my head slightly (left or right) and look at the side mirror and can see my blind spot, all while keeping peripheral vision on what is happening in front of me, which feels safer than looking away.
Works perfectly well especially for older people with neck issues.
Just a random bedtime thought.
Cars come in different sizes and different blind spot sizes too. Not everyone drives the same car and they need to fully turn their head. For my car, I can't turn my head slightly cause the middle panel is in the way, I need to full turn my head
There are also bikes, motorbikes and scooters you can miss when moving your "head slightly".
Elderly people should get blind spot mirrors and blind spot sensor lights if they have trouble turning their heads. Not to mention, elderly people have slower reaction times too.
Your random bedtime thought should have just been a thought.