There's also the zipper merge. When a lane closure is coming up, many people feel guilty about not getting over right away, but traffic studies show that it's safer and takes less time for everyone if the traffic is split into both lanes until a designated merge point.
But people still feel like a SS if they use all the machines, or if they go past a line of traffic until the merge point.
What other things have you seen that you've felt were SS, but upon analysis, were actually best for everyone?
I don't understand the information that you linked to. Did MN really not set out barrels like that until 2011, or did they not put up signs until 2011? Either way, in states that do not have signs (like MI where I live) I do think that blowing past tens of cars and forcing your way in at the merge point where the barrels are is extremely snowflakey. In my experience, drivers don't slow down and force their way over, there is a progression of cars getting over when traffic is still spread out. Also, people let each other in with traffic still flowing pretty freely at the new "designated merge point" which changes daily and even hourly. When the rush hits, the merge point tends to move up to the barrels.
When both lines of cars are to the merge point, I have no issues going 1 left and 1 right along with everyone else and I think that anyone who forces their way through is being special. During non-rush times, people blowing past everyone and forcing their way through at a point where traffic has slowed down and constricted (freeway speed limits drop from 70 to 55 or 45 depending on the signage) really do slow things down.
They've always set out the barrels, and the signs saying that the left/right lane will be closed ahead. But what happened was that most people would move out of the lane that would be closed right away, and we'd end up with a long line of cars inching towards the merge point.
Thing is, even without the signs, during heavy traffic using both lanes until the merge is still better for everyone. If both lanes are full of cars, no one can go zipping by. On average, everyone gets through faster. (Local laws may vary, of course).
The signs I've seen in MN do say something along the lines of "Use both lanes during backups
". When traffic isn't heavy, people can get over into the open lane early, and that one lane can handle all of the traffic without big slowdowns. The issue was that people were getting over miles early.
Here's a devil's advocate position: If an authority has posted signs telling people that acting in a certain way is best for everyone, but people still follow their original way because to do otherwise makes them feel bad, are they SS? If they act in a way that makes them feel good, but which gives them no advantage and causes disadvantage to the group? (Assuming that no traffic laws are involved.)