I noticed this as well. More revenue for the State. I also am amazed that the speed limit from the rest stop down to Tilton is 55MPH and everyone is doing 75-80 through there. 10 over will get you a ticket 25 over can get you arrested. So watch your speed through that section.
I would think the cops would just love that section of road, yet I hardly ever see a Statey sitting along that stretch.