Many states (including Kansas, where I used to live) have enforceable minimums as well as maximums on major highways. All states can pull over and ticket vehicl

Many states (including Kansas, where I used to live) have enforceable minimums as well as maximums on major highways. All states can pull over and ticket vehicles for, in the judgment of an officer, traveling at a speed slow enough to be unsafe (witness the stories a little while back about self-driving cars getting into trouble for obstructing traffic by being too slow). In recent years there's been a big push to begin enforcing this on highways, largely because of the rise of road-raging self-appointed "enforcers" who try to force other traffic to obey their personal interpretations of traffic laws. And in all 50 states it is now some type of infraction to be anywhere but the rightmost lane when travelling slower than other traffic, even if by "slower" you mean "exactly the posted limit". This year-old article has some notes on the left-lane stuff, including the fact that yes, you could be ticketed for doing 65 in a 65 if the passing traffic is doing 80 and your slower driving is interfering with that: http://www.vox.com/2014/6/16/5804590/why-you-shouldnt-drive-slowly-in-the-left-lane http://www.vox.com/2014/6/16/5804590/why-you-shouldnt-drive-... And also points out what was already well-known to everyone except vigilante traffic rangers: that doing only the speed limit, when everyone else is faster, is demonstrably unsafe.