I don't really buy that research. If speed led to more accidents, then highways like the Autobahn would be the worst roads to drive on.

In fact, it's quite safe, as long as you are aware of the rules and ways to drive on it.

The problem in the US is that no one is taught simple things like the left is for passing. People don't use signal lights appropriately. etc.

To get back on topic...
To calculate this somewhat right we'd have to look at miles traveled as our independent variable. The dependent variable would be # of accidents flying and # of accidents driving.

I did a lot of science fair.