Can one use Cruise Control set at 7mph over the speed limit in the Boulevard Lane?
The Buckeye drivers will cut one's heart out to get in the cushion space one leaves between the vehicles ahead. Then of course, they will go to the brakes, causing one to have to dump cruise.
The other difference is intelligence. Some states have poorly educated majorities.
Take FL for instance, (please) there is apparently no idea of traffic flow via timed traffic lights, which they have on 4-lane higways with 60 mph speed limits!
A gold medal also to the first American traffic planner who understands the roundabout. Roundabouts speed traffic flow and have a pleasingly darwinian effect on inept drivers. E,G, Could clean up the FL motorist gene pool in about a week!
We have many roundabouts on the N. suburbs of Indianapolis. They work very well.
And are great for skid pad testing my Miata too.