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re: A reminder that zipper merging is how your supposed to handle merging

Posted on 3/25/23 at 5:33 am to
Posted by LSUfan4444
Member since Mar 2004
56656 posts
Posted on 3/25/23 at 5:33 am to
quote:

What about the arse holes that ride the exit only lane until the end?? We are supposed to just let them over?


This is the reason the issue is such a hot topic IMO

People want to try to use the zipper merge technique when it shouldn't apply. Like when they're lane becomes a turning lane or when they are simply in the wrong lane.

The zipper merge techniqe can theoretically work when implemented as designed (LANE CLOSURES, ending, etc) like on ramps or when two lanes actually become one.

Not when the lane you are traveling in remains a lane but goes a different direction.
Posted by ThinePreparedAni
In a sea of cognitive dissonance
Member since Mar 2013
11315 posts
Posted on 3/25/23 at 7:05 am to
quote:

WG_Dawg


I agree with this assessment

I will further add that I have observed folks hop into the outer merge lane (at merges that also have an onramp associated with it) to bypass everyone (often to get 5 or 6 car lengths ahead) only to try to cut back in.

Like many things in life, it boils down to intention (being kind vs an inpatient dick)

Now you really want to get me going, talk about folks trying to take lefts without an arrow while tough guying folks at the opposite end of the intersection (by plowing into the middle of the intersection) in front of those taking a right on green…
Posted by RetiredSaintsLsuFan
NW Arkansas
Member since Jun 2020
2197 posts
Posted on 3/25/23 at 8:04 am to
While on a trip in Missouri I saw some "zipper merging" signs which was the first time I have seen them. I already knew the right lane would be closed, so I was in the left lane already.
Posted by Nado Jenkins83
Land of the Free
Member since Nov 2012
65228 posts
Posted on 3/25/23 at 8:36 am to
I just get dat backcut and go about my day

You prolly melting in your car
This post was edited on 3/25/23 at 8:37 am
Posted by HeadSlash
TEAM LIVE BADASS - St. GEORGE
Member since Aug 2006
55002 posts
Posted on 3/25/23 at 8:46 am to
Defective zipper sliders everywhere
Posted by Antonio Moss
The South
Member since Mar 2006
49105 posts
Posted on 3/25/23 at 9:10 am to
quote:

That's what causes slow downs in traffic. It's not the "early mergers" that are the problem.


It’s 100% of the fault of early mergers who then won’t open space to let others merge ahead. Which is basically every early merger proponent in this thread.

Again, selfish and narcissistic.
Posted by Centinel
Idaho
Member since Sep 2016
44352 posts
Posted on 3/25/23 at 9:48 am to
This works very well in Germany. Then again Germany isn’t full of fricking idiot Americans who can’t comprehend simple driving basics. Which this thread is full of.
This post was edited on 3/25/23 at 9:49 am
Posted by Antonio Moss
The South
Member since Mar 2006
49105 posts
Posted on 3/25/23 at 10:02 am to
quote:

What about the arse holes that ride the exit only lane until the end?? We are supposed to just let them over?


If you like standstill traffic and everyone being in gridlock, you should definitely not casually open space to let them over.

If you like less traffic and everyone getting to their destination sooner, you could be a rational human being and open space to allow cars to merge.
Posted by evil cockroach
27.98N // 86.92E
Member since Nov 2007
8927 posts
Posted on 3/25/23 at 10:13 am to
The caution sign should not call out what lane is closed. Both lanes should have a caution sign that simply says “lane closed ahead, be prepared to zipper merge”. Then , you don’t know which way to go other than to slow down and prepare.
Posted by Ricardo
Member since Sep 2016
6197 posts
Posted on 3/25/23 at 10:24 am to
Nope. You’re wrong. Adjust to the flow of traffic. Don’t expect traffic to adjust to you.
Posted by Antonio Moss
The South
Member since Mar 2006
49105 posts
Posted on 3/25/23 at 10:57 am to
quote:

Nope. You’re wrong. Adjust to the flow of traffic. Don’t expect traffic to adjust to you.


This rational is applicable for both lanes.



Again, the traffic at merges is caused by cars having to come to a complete or nearly a complete stop to merge. This is caused solely by people who refuse to open space and allow cars to merge. If cars and the open lane simply take their foot off the gas for two seconds and open space, traffic reduces tremendously.

But because we have foolish yahoos who think once they’ve merged the entire process is over, we will continue to have backups.

Posted by Ricardo
Member since Sep 2016
6197 posts
Posted on 3/25/23 at 11:25 am to
The issue is that people take advantage of the situation and weave through traffic. People notice this and get pissed off. If everyone was a considerate driver, then we wouldn't need to have a discussion about it. People being people though create problems.

I don't think anyone is arguing against what "should" work. It's a matter of human nature, and it's annoying watching people treat commuting like it's a race.
This post was edited on 3/25/23 at 11:25 am
Posted by Korkstand
Member since Nov 2003
29054 posts
Posted on 3/25/23 at 11:38 am to
quote:

Again, the traffic at merges is caused by cars having to come to a complete or nearly a complete stop to merge. This is caused solely by people who refuse to open space and allow cars to merge.
Nope, this is caused by the people who *need* to merge.
quote:

If cars and the open lane simply take their foot off the gas for two seconds and open space, traffic reduces tremendously.
Your argument hinges on the absurd idea that cars slowing down reduces traffic. That's wrong.

The open lane needs to keep moving. More cars per second through the choke point equals less traffic. No ifs, ands, or buts about it. If you got all the way to the front of the blocked lane, sorry you fricked yourself. You need to take one for the team and let the moving traffic keep moving. You're at a dead stop, if you try to merge you will cause a domino effect and slow down ALL the cars that are doing their part to reduce traffic. And the absolute dumbest thing to do is to keep doing that over and over one after the other. That's the slowest possible way to clear the traffic.

The open lane needs to keep moving, and the blocked lane needs to merge whenever they have an opportunity to do so without slowing down the moving vehicles.
Posted by Antonio Moss
The South
Member since Mar 2006
49105 posts
Posted on 3/25/23 at 12:32 pm to
quote:

Your argument hinges on the absurd idea that cars slowing down reduces traffic. That's wrong.


Compared to coming to nearly complete stops, it absolutely reduces traffic. It’s not even debatable.

The fact the people are even arguing this is disturbing.


quote:

The open lane needs to keep moving, and the blocked lane needs to merge whenever they have an opportunity to do so without slowing down the moving vehicles.


Which can’t happen when people who have already merged insist on riding the bumper of the car in front of them.

There is going to be a reduction in speed at merge no matter what. The zipper method reduces it from 70 mph to 45 mph. The selfish “I’ve already merged so frick you” method reduces it from 70 mph to 5 mph.
This post was edited on 3/25/23 at 12:36 pm
Posted by Korkstand
Member since Nov 2003
29054 posts
Posted on 3/25/23 at 1:22 pm to
quote:

Compared to coming to nearly complete stops, it absolutely reduces traffic. It’s not even debatable.
Lucky for me we're not comparing to coming to nearly complete stops. My way keeps the average vehicle speed as high as possible.
quote:

The fact the people are even arguing this is disturbing.
What's disturbing is people can't understand that cars can go faster when there are no merges going on.
quote:

Which can’t happen when people who have already merged insist on riding the bumper of the car in front of them.
Exactly, and the merges shouldn't happen. They damn sure shouldn't be done after each and every car. Each merge requires coordination which requires slower speeds. Why the frick would you want to do that as many times as possible?
quote:

There is going to be a reduction in speed at merge no matter what.
Yeah that's what I'm telling you. I'm trying to eliminate those speed reductions, while you're trying to do it as much as possible. It's just plain stupid.
quote:

The zipper method reduces it from 70 mph to 45 mph.


More like 70 to 20.
quote:

The selfish “I’ve already merged so frick you” method reduces it from 70 mph to 5 mph.
The "selfish" method slows 70 down to 60 in the open lane and the dumbasses in the blocked lane down to 0. Average vehicle speed is higher and car throughput is higher thus traffic is reduced.

Do stop lights move more vehicles by giving each direction just enough time for 1 vehicle to go, or by giving each direction enough time for 10 or 20 vehicles to go before switching? The answer is obvious, allowing more cars at a time increases vehicle throughput drastically. Same goes for merging.

I understand why people fight so hard for the zipper merge, it's because it seems the most "fair". First come, first go. And studies and models are designed with this bias in mind. But it is absolutely *not* the fastest way to clear traffic. Not by a long shot.
Posted by The Third Leg
Idiot Out Wandering Around
Member since May 2014
11934 posts
Posted on 3/25/23 at 1:28 pm to
quote:

Right Lane closed: 1 mile Right lane closed: 1/2 mile Right lane closed: 1000 feet We approach the right lane closure, I am in the left, and have been for some time and I’m supposed to just let the people over who purposefully ignored the sign. frick all that.

Oh, Larry, you ignorant slut.
Posted by Antonio Moss
The South
Member since Mar 2006
49105 posts
Posted on 3/25/23 at 1:34 pm to
quote:

The "selfish" method slows 70 down to 60 in the open lane and the dumbasses in the blocked lane down to 0.


Until the first car in the closed lane forces themself over and then your entire line of reasoning breaks down.

Again, anyone who argues this is a fool.
Posted by The Third Leg
Idiot Out Wandering Around
Member since May 2014
11934 posts
Posted on 3/25/23 at 1:35 pm to
quote:

Korkstand

None of these scenarios requiring lane reductions to a single lane have that single lane flowing at 70mph. A single file line of cars never moves at constant speed. Phones make this worse. Most of them involve lines of cars in full stop and go fashion. The line of cars is stopped at many points.

I’ve seen 2 mile lines because some jackass blocks the forthcoming closed lane to prevent both lanes from filling up and they’re still stop and go. The zipper merge fills both lanes and at the choke point it allows alternations. The choke point is always filled with rubberneckers creating the stop and go and people stopping all along the way to allow others to merge.
This post was edited on 3/25/23 at 1:38 pm
Posted by Korkstand
Member since Nov 2003
29054 posts
Posted on 3/25/23 at 2:45 pm to
quote:

Until the first car in the closed lane forces themself over and then your entire line of reasoning breaks down.
Ah yes, you are correct, the efficient method of moving traffic *does* go to shite the instant a merge happens. And in the case of a zipper it's just shite the whole time.
quote:

Again, anyone who argues this is a fool.
I think we can agree that a merge of any type can only slow traffic. My way reduces the total number of merge attempts, your way tries to get 10,000 people to do merges perfectly one after the other.

Which of us is the fool?
Posted by Korkstand
Member since Nov 2003
29054 posts
Posted on 3/25/23 at 2:58 pm to
quote:

None of these scenarios requiring lane reductions to a single lane have that single lane flowing at 70mph. A single file line of cars never moves at constant speed.
Right, because people ahead keep trying to merge after it's too late for them to do so at a decent speed.
quote:

The zipper merge fills both lanes and at the choke point it allows alternations.
Yeah, but why is this desired?

If we have 1,000 cars, 500 in the free lane and 500 in the closed, do you honestly think it would be faster to do 500 zipper merges one after the other rather than just let the 500 in the free lane move out as quickly as they can, and then the 500 in the closed lane move over in unison and go as quickly as they can? I can guarantee that the 500 then 500 method will have much higher throughput. There is zero doubt about it.

Go back to my stop light example and figure out a way for throughput to be higher letting cars go one by one instead of in batches. And I really hope someone asks about roundabouts.
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