Some food for thought...
UK Road Stats for 2009
2,222 dead
24,690 seriously injured
195, 234 slightly injured
U.K road deaths in 1966 (the year I started driving) were 7,985 and they have fallen steadily since then. In 1990, when speed cameras were introduced there were 5,217 fatalities. There have obviously been many changes in the law since 1966, Seat Belts, Crash helmets, Drink driving laws, etc, but no major legislation since 1990, so you can draw your own conclusions as to why the death rates have more than halved in the last 20 years.
Pete