It has been proven that the longer you are on a roadway, the greater your chances of getting in an accident.
That's why I get to my destination as quickly as possible.
Yes, more exposure equals greater risk.
That being said, a favorite theory of mine is that if the most dangerous part of any road is an intersection, the less time spent there, the less likely it is for you to be hit there.
Using the standard lane widths, and assuming two lanes in either direction, plus a turn lane (average arterial in any city); by going through it at sixty miles per hour you are only exposed for .8 sec.
Sadly, empirical data (lurid stories in the newspaper) seems to prove otherwise, as reports of fatal or near fatal accidents in intersections always mention that the cited party was going sixty miles an hour.
Oh well, back to the drawing board!
I concur.