When I have the unfortunate pleasure of going down to Hazard or Pikeville, I have to go thru London and across the Hal Rodgers parkway (formerly Daniel Boone pkwy).  The speed limit is 55 but everyone flies on that section of road between London and Hazard.  I would have to say the average speed is 70 MPH.  The biggest problem I have is the big 18 wheeler coal trucks.  OMG they fly!  And these roads are steep and very curvy.  Its just a 2 lane highway with the occasional truck lanes.  The go past you so fast you can feel the wind off their trucks.  Also I hate the chunks of coal that sometimes bounce up and hit my windshield.  I am sure these truck drivers have hard jobs and are pretty good drivers.  I just wish they would slow down a little around those curves.  Thats all.