This line of thinking is exactly why we now have 300 deaths from traffic, or as many as murder cases. People think negligence in driving, be it speeding, fiddling with your phone, accelerating for that yellow and dodging instead of yielding to pedestrians in crosswalks are somehow excusable. They're not when you are driving a car.
Not stating this as fact -- I haven't even done my homework to look at vehicle-related deaths over time -- but as motivation for the possible blind spot pointed out by thrownaway2424. Historical crime data is notorious for this because statistics are gathered by law enforcement and have a subjective aspect based on the time that they are gathered.
http://en.wikipedia.org/wiki/List_of_motor_vehicle_deaths_in...
Murder, aggravated assault, rape, robbery, etc. are all down across the board, in some cases by more than 50% in 20 years:
http://www.fbi.gov/about-us/cjis/ucr/crime-in-the-u.s/2012/c...
There are always some subjective decisions on data reporting, but that's much more prevalent in data comparisons between countries rather than over time within a single country. The FBI has been very consistent in their reporting.
So the child who ran out chasing after a ball is your fault? The bicyclist wearing black, at night, in the rain, with no reflectors or lights is your fault?
We are human. We have moments of inattention ALL THE TIME. This is proven by many, many, many psychological studies. You don't convict someone of a crime because they committed an accidental error.
If you want to cut down on this, fund self-driving cars.
It sounds like there should be thousands of Belgians in jail for traffic crimes, but extrapolating from their population / imprisonment rate (11.2M & 108/100k), it looks like they only have 12k total people in jail. Their annual violent crime rate is ~50/100k and if you assume even an average of a 2-year sentence for violent crimes, there is no room left in jail for these traffic criminals...
[http://archive.etsc.eu/documents/Final_Traffic_Law_Enforceme...]