People should be letting one vehicle merge at a time i.e. zipper merge, right here:This is based on a lane ending and all approaching the pinch point in their travelled lane. It's sort of what happens on major highways when a lane ends or is blocked off, most drivers allow the zip merge to work.
It's not the same situation when a driver cheats by taking an exit lane or HOV lane to zip past congestion. We have a pinch point on Hwy 48N just north of the 407. The road has a thru lane and a 300m right turn only lane that doesn't get many cars. Drivers regularly run cheat right turn only lane to jump the congested thru traffic lane - it log jams at the pinch point slowing everything down terribly. In the summer the city erects a 200m line of plastic bollards which stops the queue jumping, zip merging happens 400m back and the traffic flows a lot better.
They remove the bollards for the winter and it again becomes a mess as queue jumpers play.
If they're not doing that, then they're just as bad as the people cutting out and merging back in.
If everybody lets three cars in before they hit this point, then the right lane will be three times faster, and it isn't a zipper.