Properly understood, Scott’s Law would combat the gapers’ slow down.  It says not to slow unless you cannot exit the lane next to the problem.

Everybody tends to slow down for a parked emergency or maintenance vehicle anyway.  Telling the drivers in the lane adjacent to the parked vehicle to change lanes puts them into the awkward (dangerous) position of trying to change lanes into spaces which are shrinking because of the slowing.  The lane changers add to the slowing, because everybody adjusts his following distance.  This situation worsens as more and more traffic enters the area near the parked vehicle, increasing the chances for a crash.

Logic seems to dictate that the drivers in the lane into which others are moving should not decelerate, but accelerate, making room for others behind them.

What about some “really good kid” the first time he encounters this move over situation on the road.  He’s been taught to move over.  He may try to move over even when traffic makes it virtually impossible.  Crash!

I have personally been involved in a situation in which several maintenance trucks were parked on the right shoulder with their emergency lights lit.

On Interstates with two lanes in each direction, I have encountered a row of maintenance vehicles parked on the right shoulder with their emergency lights lit and changed lanes to the left lane.  There I discovered men working in the median!  I had moved closer to them by moving away from the parked vehicles.  Shouldn’t they have been parked on the left shoulder?

I have seen tractor semi-trailer rigs cut-off cars to change lanes away from the parked and lit emergency or maintenance vehicles.