Re:Despite improvements, driving in America remains extraord...
by mcguire on Sunday July 05, 2015 @12:51PM
(#9834080)
That would help, I think. I suspect a difference in average speed is partially behind the differences between Montana and New Jersey, possibly more important than the usual "Montana drivers are freedom-loving (or insane) and don't like to be told to wear seatbelts."
Intuitively, if two cars each average one death per million miles, but one of them had an average speed of 5mph, and the other 60mph, then the faster one should be regarded as safer because it maintained that death rate under less safe conditions.