Topic: Seatbelt angle question
Why do they want the shoulder belts flat or angled down to 15' after the seat? I would imagine the impact force would want to crush your spine the more downward of an angle they are. I remembered hearing back in the day they should angle up which makes sense for your spine.
All i can think is to help keep your butt in the seat in a rollover or to maybe help keep the belts on your shoulders in a front impact.