the safety concerns of car windows & leaving a child/animal inside a car is not an exact parallel to the safety concerns of a seat belt. for one, in many areas there are laws against leaving children [& often animals] inside a vehicle during inclement weather, even with windows rolled down.
laws, as in: there is a clear standard of rules, available for anyone to find out, fairly common knowledge, & consequences if you don't follow, even if nobody gets hurt.
there are no laws [that I am aware of] against people reclining passenger seats when a vehicle is in motion. hyperionred, you seem like a smart person, capable of intelligently analyzing the world & formulating your own opinions, so I'd like you to tell all the rest of us the common sense we are lacking. now, I'm not being facetious, but rather nonjudgmental & serious about this. you say vehicle seat positioning is common sense, but I think of the differences in seat position between myself at 5'6" tall, & my mother, who is 5'2" tall, & some of my tall friends, 6 feet, & even one who is close to 7 feet tall.
all of our seats will be positioned differently to sit comfortably & safely while riding as a passenger or a driver in a vehicle. we have less leeway when it comes to driver seat positioning. my mother & I must sit closer to the stearing wheel, which many of us know is more dangerous due to the air bag, but have no choice. my taller friends must sit farther away from the pedals & steering wheel, & must adjust the seat to lean back in order to allow for proper arm placement.
now, here's where it gets tricky: shoulder & lap belts aren't designed to accommodate non-averaged sized people, so taller & shorter people struggle w/proper placement. I often have problems w/shoulder belts running accross my neck, even when I adjust them as close to my shoulder as the vehicle will allow; you can imagine how this might fit my mother! this is very dangerous, & there isn't much I can do about it. depending on how my seat is adjusted so I can reach pedals, steering, my seat belt will sit differently, & this will also be different on a taller person.
so here's the kicker--if everyone adjusts their seats, & seat belts, as close as they can for safe driving, do we really know how safe it is if we have to make adjustments for our heights? would you like to know if you are driving in a safe car that is not safe for you because you must recline the seat at a 15 percent angle in order to fit properly? stranger things have been known to happen in vehicles, & w/o crash testing for this kind of compensation--how can that be common sense?
I personally am glad to have read this article. I think that the car manufacturers can do something so simple as to put a warning label on seat belts, seat backs, visors, just one visible place in the vehicle that everyone will read. It won't cost much, & they won't have to change anything about how they make cars, but then people will have the knowledge to make an educated decision since most people aren't as well thought out as the people who have posted in this forum.