Traffic still moves at the speed of the slowest driver in the contruction zone. The backed up line of traffic will be shorter but you'll still only go through the zone as dictated by the speed of the drivers in front of you. At the zip point, you'll still have to slow down and allow traffic to merge and the traffic will back up depending on the volume of traffic at the time.
What we really ought to be complaining about is why do they create construction zones for such lengths that causes us to poke along at 45mph for miles while no work is occurring and the road is serviceable for many of those miles.
So then why should everyone get mad? Not saying you do, but so many people are saying people like me are immoral for doing this. Hey, I get it. I used to get mad at those people too.
But I realized back when the Sherman Minton Bridge was closed for several months and EVERY DAY was a two hour trip one way, maybe the lane zippers aren't actually evil. Maybe I'm wrong. One day I looked at the emptier "closed ahead" lane and then looked at the long line of bumper to bumper traffic in the open lane and decided this was insanity. That's a whole lot of lane space being wasted for miles and miles.
Yes, after you get to the closed lane, traffic in the remaining lane can only go as fast as the slowest car. But if you're merging miles before the lane closure, aren't you creating miles more of that situation? Why do that when there are miles of 2nd lane that could be put to use?
Don't get mad at me for thinking of this as a more efficient way. And, maybe it's not a lot more efficient than early merging. But I don't get high blood pressure much anymore from getting pissed at the lane zippers.
I still get pissed at the spot hoppers though.