I'm just wondering why US is grown so fast and to other direction compared to other western countries. It's like island with unique rules of life. I just heard weird story, not sure how common incidence this is, but one man fell to the ground and he took pretty bad hit. When people talked about calling ambulance (it looked that bad), that man was stopping them by saying "no ambulance", even when there is enough reasons to do so. I don't know what happened next, it's just interesting story.
I can't think that's even possible where I live or even in any European country.
When I was 15 or 16 years old, I hit one boy by biking, boy was also with bike, going uphill. Cycle path was pretty full and I didn't see this boy early enough. It wasn't really bad accident, but at that point I saw that my reflector was broken and boys head was bleeding a bit. Plastic reflectors pieces cut through foreheads skin. I can't even remember who called ambulance, but there is no way in hell that people would say "no ambulance". In situation like this, you can't be sure if it's serious or not (luckily it wasn't in this case), so calling ambulance, get some real diagnostics, x-ray, etc.. whatever is reasonable in current situation.
Then back to that falling to ground, if it's happening here. First aid skills should be mandatory skill, but only 300000 out of 5,5 million get once / year first aid practice (short courses). For me it's work related must have skill, so it's not optional like it is most of people here. So in that case we saw someone falling on the street and hurt badly (like hitting head to asphalt) - some people will go and find out what's going on (like guys did in US, in that story). Here people may not even ask if ambulance is needed, because of this "we don't know enough" mentality.
That's one interesting difference