this post was submitted on 03 Jun 2026
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Learn what zipper merging is you fuckin potato.
Or do you want backups to take up twice as much space as they need to? It's about efficiency. If everybody zipper merges, you still get your fucking turn.
Yeah people like this are fucking idiots. Just let the dude over it's not going to slow you down it's not going to stop you shit if it cost you 15 seconds oh my god what the fuck ever. People are fucking retarded when they think that they have the right to own a lane.
The thing is that selfish people trying to skip to the front of the line and cut in front of the people in the through-lane right behind another merging vehicle instead of taking their turn alternating with through-lane vehicles absolutely do create congestion which can back up a long way.
Zipper merges only work when people in the merging lane aren't being selfish assholes and trying to do that.
Right! People get so crazy impatient and entitled when they enter a vehicle.
Having to come to a complete stop to let them in is why the lane gets backed up for a mile plus.
I always leave 2 car spaces (unless a semi needs to merge, then it's 6) and it's rare for the person up front to merge in without me fully stopping, flashing my lights, and emphatically waving them in.
The problem is that most people don't know what zipper merging is, including those who need to take advantage of it.
This! Also, let the motorcycle in front of you if you are at the head of the line at the light! We will be long gone before you pull your thumb out of your ass and take you foot off the brake when the light turns green
If everyone zipper merges correctly. More often, half the drivers try to use the lane that's ending to skip to the front of the line and create a bottleneck that brings traffic to a stop for half a mile...
That is the zipper merge https://www.acg.aaa.com/connect/blogs/4c/auto/zipper-merge-keeps-traffic-moving and both lanes should be full all the way with every other car giving way.
I know what it is, but cars in the merging lane often try to skip the one they're supposed to give way to and merge right behind the one in front of them.
Have you ever had a zipper jam?
https://www.youtube.com/watch?v=bXP6vR7WmSU
What do you mean
That only works when people behave like civilized human beings who take their turn instead of trying to skip to the front of the line.
That's the thing innit? The line should be spread across both lanes all the way up to the point where one closes.
The person who gets out into the closing lane to skip ahead probably isn't thinking about it this much. They're probably just an entitled asshole. But, in this case, they happen to be doing it right.
Everyone getting into the open lane early effectively closes the other lane early and pushes the congestion further back, disrupting other intersections.
If everyone merges into the through-lane as soon as they can, then there's no bottleneck. It's only an issue if there was another intersection recently before the lane closure, but typically these are on highways with few if any intersections.
If you have two lanes of traffic moving at a given speed, and try moving both those lanes through one lane of traffic, mathematically it has to slow down, because you're trying to fit the same amount of traffic through half as much space.
It's like when you pour water in a funnel, the bottom is narrower so it drains slower than you can fill it.
Or it's like doubling the resistance on an electrical circuit. It cuts the current in half.
So, "there are circumstances in which merging in advance is acceptable." Sure.
I think we'd be hard pressed to invent one where it's superior without implying a failure in how the lane was closed.
In the US (where I am), zipper merging is mandatory in two states, recommend ten more, and allowed in all of them.
You're still ignoring my main point which is how many people abuse the merging lane to try to get ahead and skip to the front of the line.
Systems that depend on everyone cooperating fairly and being patient and taking their turns kinda break down when a bunch of selfish people try to take advantage of the good faith and fairplay of others...
Doesn't make sense
Not beating the potato allegations.
Hee hee
www.modot.org/zipper-merge
What does that mean
Which part?
The word, idk what it means.
Which word?
The weirdly spelled one
Weird is weirdly spelled. That one?
Yes
I'm sorry.
No worries big dawg
No problamo lil' dawg
https://www.acg.aaa.com/connect/blogs/4c/auto/zipper-merge-keeps-traffic-moving
Never mind, I see you're just trolling,
We all need to zipper block this fine fellow and move on to increase lemmy traffic flow
What community on lemmy do you think this is?
Oh, well the teeth are the cars and the zipper is the merge point (lane closure)
Both lanes use all available space and take turns joining into a single lane at the merge point, minimizing congestion
But how does my car fit
I guess it depends on where you are.
Let's take the scenario where there are no other cars on the road, you're in the lane that stays open driving next to a car in the closing lane, and you arrive at the merge point. In this case, you should keep going as normal, and the other guy should fall in behind you. (Ideally he slows down to fall out of sync before getting there. Less ideally he speeds up. Least ideally you both speed up and make chaos.)
If both lanes are fully used and there's a line in both, same situation. First car in the open lane goes, then first car in the closed lane, then second car in the open lane, etc.
Now the controversial case where a bunch of well meaning souls have lined up preemptively (causing the congestion to press back further) and some asshole just takes the closing lane all the way to the end and winds up next to another car. That car should proceed and the car behind it should wait to let the asshole in before proceeding.
It feels wrong, but it's the least problematic flow. Effectively closing the lane prematurely pushes the congestion back further and starts disrupting other intersections
But if i have too many passengers I wont have enough seat belts
Just tie them to the roof.
1 car from the left lane, 1 car from the right lane. merging together in an alternating pattern. like the teeth in a zipper. a 'zipper merge' if you will.
you acting like the meme is the problem. the car wasn't ignoring the signs, they were using all of the available space to move forward down the road before merging into the lane.
That doesn't explain why my air bags wouldn't work.