I remember hearing that with the advent / introduction of air bags & anti lock brakes that people tend to go faster due to the feeling of 'being safer'.. Since we have all these added safety features, people tend to take more risks.. At least, that's the theory.
We (as a society) seem to be in more of a rush these days too, with the average "work day" far exceeding the traditional 9-5 time frame. Work can now call at any time, and should be dealt with. It's no longer acceptable to have a parent home to look after the young-uns, nor allow them to come home via 'latch key" and so ensures the race to get to the day care, or call them to state being late. basically, we are trying to squeeze in as much as we can, and have even adopted multi-tasking at any available opportunity.
Also, having never been in a accident, "how bad can it be?!" or "it'll never happen to me" but once it does, habits will quickly change.
At a local school meeting, the parent; were complaining of drivers speeding thru a school zone. The cops came & "studied" the situation. their recommendation found that it was the parent's who were speeding thru the school zone. racing to get a parking space on the street, then racing off once their kids were dropped off. Of course, I find it amazing how many people drive their kids to & from school In my day, if mum or dad drove, there as a serious issue