I agree with the overall premise. However, some of it depends on location and specific factors. Right turn lanes could be less dangerous overall in areas with little to no pedestrians as distracted drivers would be more likely to rear-end a turning car. In a city with lots of traffic, that right turn lane might be more dangerous.
"Education and testing alone won't stop drivers from making mistakes."
It very well could. Many of these mistakes are founded in ignorance. I see people doing things like passing on the right/shoulder and having no idea why that's dangerous. Or they have no idea what the vehicle dynamics are like for their car. Doing something like a skid pad or autocross (TireRack had a driver safety program associated with them) can really wake people up to their vehicles limitations. Things like following too closely on the road is generally not a true mistake, but a product of what is essentially negligence.
Edit: why disagree?