Doesn’t make sense
Comment on That's a no
HeHoXa@lemmy.zip 14 hours agoReturn_of_Chippy@lemmy.world 14 hours ago
Banana@sh.itjust.works 14 hours ago
Not beating the potato allegations.
AlfalFaFail@lemmy.ml 14 hours ago
www.modot.org/zipper-merge
rumba@lemmy.zip 13 hours ago
Return_of_Chippy@lemmy.world 12 hours ago
Trolling and ragebaiting in shitpost??? Seems like I’m a badguy
HeHoXa@lemmy.zip 14 hours ago
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
Return_of_Chippy@lemmy.world 14 hours ago
But how does my car fit
HeHoXa@lemmy.zip 14 hours ago
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
Dearth@lemmy.world 13 hours ago
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.
Return_of_Chippy@lemmy.world 13 hours ago
That doesn’t explain why my air bags wouldn’t work.
wonderingwanderer@sopuli.xyz 13 hours ago
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.
HeHoXa@lemmy.zip 12 hours ago
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.
wonderingwanderer@sopuli.xyz 9 hours ago
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.
HeHoXa@lemmy.zip 8 hours ago
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.