2003 Oldsmobile Alero Owner's Manual - Page 27

Q: What's wrong with this? You can be seriously injured if youwear the shoulder belt under yourarm. In a crash, your body would move too forward, which would far increase the chance of head and neck injury. Also, the belt would apply too much force to the ribs, which aren't as strong as shoulder bones. You could also severely injure internal organs like your liver or spleen. I I I I I I A: The shoulder belt is worn under the arm. It should be worn over the shoulder at all times. 1-20