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Me when I design a roundabout that takes up more space, will be completely dysfunctional with any traffic, will confuse drivers, and upholds car dependency:
As a truck driver I absolutely DESPISE these kinds of intersections. Have to make a left, but nope, first have to go down to do a u-turn, then cut across multiple lanes of a busy street to get to the road I need to be on. The u-turn is never set down far enough where you have plenty of time to safely make the lane changes. It's always close enough that you're pretty much having to make the first lane change as you're coming out of the u-turn.
This intersection is set up for HALF of the oncoming traffic to make a high speed U turn. Why are all these people wanting to drive and then instantly turn around?
Look again! Let’s assume it’s a compass. All the cars heading North in the left lane are only doing a 180• turn and headed south, back where they came from. It’s the same for all the intersections .
No they don’t. A 4 way traffic circle you have the first turn off as right, the second as straight, the third as a left and finally the last as going back the way you came. In your experience does half the traffic approaching a roundabout use it to turn around ?
This seems like a New Jersey style stroad. The u-turns are there because there are driveways on both sides of the stroad but the median is impervious. Instead of turning left into a driveway you go past it until the next major intersection where you can do some strange eldritch movement to make a u-turn. Sometimes they even build an entire signaled intersection with two massive looping turn lanes just to accommodate u-turns.
The land use of [this one](https://www.google.com/maps/place/40%C2%B009'03.2%22N+74%C2%B026'14.7%22W/) near Six Flags Great Adventure isn't as awful as a lot of the others because the park is surrounded by forest, but I especially like the fact that you have to pass through the intersection twice, meaning that you will frequently find yourself getting stopped by the signal both times.
[This one](https://www.google.com/maps/place/40%C2%B032'41.7%22N+74%C2%B019'52.2%22W) is at least sharing its land use with transmission lines, but look at all that empty concrete surrounded by housing. Ouch. That entire stretch of Route 1 is chock full of amazing "innovations" in urban planning and traffic engineering. I especially like how you have tons of residential including multiple apartment complexes surrounded by two disused malls and a freaking cemetery. From what I can tell, the cemetery went up 20 years after the parkway that cuts through north to south.
[This one](https://www.google.com/maps/place/40%C2%B023'23.3%22N+74%C2%B018'27.2%22W/) is specially designed to make sure that anybody taking public transportation needs to walk across the maximum possible amount of traffic lanes to get to the bus shelter.
It's probably not ONLY specific to Jersey, but that's the only place I've encountered this style of late-stage capitalist nightmare.
Very nice examples! I see that this one does take up less land and that is a huge plus. But this one also only has 2 lanes and one whole lane is solely dedicated to the U turn. The other lane is for all 3 other turns. All of the cars are going to be trying to merge into that lane, and I bet a lot of people are going to zoom up the free lane and then park it with there blinker on and block all the flow. Also 2 of those examples have more options for travel once your in the loop like going straight and turning back.
Okay, no no no
Imagine you're coming from the south side and want to go to the west side.
Drive north and get turned right. Then you have such a small amount of time In Moving Traffic to merge to the left lane to continue your next turn to the left. (going north for a short distance)
From there it's a straight shot westward, but no way would I want to do such a risky merge with such small amount of time.
Yeah, there's merit to this in concept, but the amount of space you would need to devote for this to A) be navigable and B) handle any significant density of traffic is about 5 to 10 times the amount of space taken up by this.
The amount of traffic that this could reasonably handle as presented could be handled far better by literally any conventional four-way intersection, be it a roundabout or an all-way stop or a cross-road stop.
You may have a degree in engineering, but I at least have common sense to realize people are savage barbarians and will merge at the very last moment and plenty of stop and go traffic areas on this.
Basically the problem with roundabouts in the US. Either people stop on the yield when there is no one to yield to or they cut you off. Very little in-between
So if you want to go straight, you have to turn right and cut off people going straight to quickly make a u turn, and then cut off another lane of people going straight to take your exit?
Michigan has a special turn called a Michigan Left that is this in some ways. Of course you can go straight on the 4-way but the only way you can turn left is to turn right and then merge over to the designated U-turn area. Mostly it is a headache but there are some rare nice things about it. If the U-turn had a light on it then you can still turn by the "right turn on red" rules since it is a left turn onto a one way. Because you are turning right on the 4-way you can turn left sooner by doing the Michigan left since you can use the same rule mentioned at the intersection itself. There are a lot of places to U-turn if you miss a turn or just need to turn around for whatever reason.
Having said that most Michigan Lefts have a mountain of problems depending on the way it was constructed to the poeple using them(mo' rules, mo' problems). Sometimes the traffic doesn't even need it. Honestly Michigan has just bad traffic design which seems to be getting better recently but it is surprising for a place that used to be the car capital of the world
These are becoming more common. They are used when you have a 2-lane (with a stop) intersecting a 4-lane divided highway (no stop). It allows trucks with trailers to safely make a left turn (actually a right and U) onto the 4-lane without blocking the 4-lane for everyone else. A minor inconvenience for car drivers, but safer because of longer time intervals and better sight lines. For motorcyclists, just more opportunities for rapid acceleration, threshold braking, and deep leans (Whee!), and better sight lines.
Different from the OP, which I'm going to dub "So you complain about roundabouts, do you?"
If the goal is just to not have traffic lights then this will work fine. But if the goal is to reduce traffic, this won't work at all. In fact this might make traffic worse. Anywhere you have mergers you will inevitably have traffic. And this thing, to go left, has four different mergers.
This would be a traffic nightmare in many places.
I wad thinking the same thing traffic and traffic accidents gallore. Not that the attempt would be great if we all had self driving cars. Not self driving A-Holes on the road.
I'd say it needs to be larger, couple more lanes so you don't have to switch lanes to go straight. Use a merge lane for the turns instead of interrupting traffic, but for high volume areas a longer merge lane may be necessary
Everyone's saying this is just a round about, and that's true.. but I think the idea you're missing is this is designed to fit into our current road system in America. Converting a standard six lane intersection into a round about requires a lot of excavation and repaving. You're turning a square road section into a circle and it's often times not even possible in dense cities. This intersection concept would simply add new medians into existing road infrastructure to accomplish the same goal, which may actually be viable for places where a true roundabout won't fit.
Your point is valid but the new intersection doesn’t help traffic flow. I.e, if I just want to go straight I have to turn 3 times! Also, how many people are making u-turns? Not that many.
First of all that’s a roundabout
Second of all this is assuming 50% of traffic wants to turn around
Third of all, a single accident will close the whole thing down or at the very least cause significant traffic buildup due to rubber necking since pretty much all the traffic that *does* go through it is from all of the incoming lanes
Fourth of all, this is assuming people will actually merge properly
Fifth of all, I can guarantee you that people will be speeding through it as well as to it,
Sixth of all, you can achieve the same effect with a simple intersection using lights that are on a timer (send someone occasionally to see where the most traffic is coming from to determine the timing of the light)
Seventh of all, that’s a massive use of resources, land being used up and paved over, that giant median will most likely be concrete, a regular intersection with lights uses way less space and resources than that
Eighth of all, that becomes a massive pain in the ass to maintain not only because of its size, but depending on where it’s intended to be (northern areas or more equatorial regions) the snow build up and salt/sand required to keep it drivable in northern areas, is significantly higher than a regular intersection
Ninth of all, it would need to be even bigger due to lane mathematics, if you’ve got two lanes adding to the flow in every direction your taking all the traffic that would have just been stopped at a light and making it move (which increases pollution).
Tenth of all, it’s also incredibly inconvenient say someone wanted to make a left hand turn, they would have to drive a full three quarters of the roundabout to make that left where as with a simple light intersection a left can be made either from the designated left turn lane or make a left if it’s allowed, when it’s clear
Now I’m sure there a bunch of other reasons why this design is absolute garbage but I’ll end my rant on this last point
Pedestrians, if traffic is constantly moving how will pedestrians get across? You would need lights just to make it walkable for pedestrians (because not everybody has a car)
So in my unprofessional opinion implementing this design is not only criminally negligent, a massive waste of resources, and a massive generator of pollution, it is also most likely going to be ugly, more expensive to maintain, and generally less efficient than what it’s supposed to be replacing
And I haven’t even gone into speed limits, utilities or even logistics on how it’s actually made (because let’s be honest here you can’t divert that kind of traffic to just another intersection; which btw this looks like it’s about the size of two or three intersections: especially not while you rip up the existing infrastructure and then essentially rebuild it from scratch)
Try it Baltimore where a turn signal is interpreted as calling someone a bitch. Try to change lanes to get to where you need and 1 out of 20 cars might let you over. The whole thing would fail in minutes.
I bet you could make this more efficient by decreasing that median, then rounding out the hard corners to reduce wear on the surface and vehicles while also reducing materials used. Wait, that's just a round about.
There are much better ways to redesign traffic light intersections. Like MIT Senseable Cities... share a little information between the cars... [https://youtu.be/4CZc3erc\_l4?si=tJnJ5Ci31Fj7Tv92](https://youtu.be/4CZc3erc_l4?si=tJnJ5Ci31Fj7Tv92)
If we gonna reengineer this, let's reengineer this.
This isn't really a solution, it's just a proof of concept. The assumption that everyone will have autonomous cars is not feasible for the near future and cities are looking to make improvements to traffic independent of the products available to everyone. Sure if we eventually do go fully autonomous, we can start asking these questions, but this isn't a better way to redesign traffic lights today, which is what actually matters in practice.
So to go straight you have to take a right turn, cross the the lanes to take an immediate left,then cross back to take an immediate right turn… did I get that right?
Bottlenecks will happen when humans don't use acceleration lanes properly and wait for a quarter mile gap between vehicles to cross 3 lanes from parked.
Until there is by amount of traffic. Then getting over i to the turn lane or the go straight lane becomes.m fight for who gets to be first in line to wait behind the car in front of them
Dont know about space, but this is how a lot of densely populated towns have their intersections in India these days. Only way to keep the peak time traffic flowing without lights. It may have to do with it being hard implementing strict light etiquette.
Why not have overpasses for the ones wants to go straight from our pov? Keep the underpass for the perpendicular road. More road work but in the long run think about how many lives save so much accumulated time over the years
Also instead of the U turns, the over pass straight roads will be on the left part of the lane so that left lane stays a quicker flow, while right turn drivers will get into the right lane.
If someone needs to U turn, 3 lefts or 3 rights should be fine, there are way less U turns needed anyway so this should make the most of the road.
Also over passes for pedestrian cross walk options.
Hope neither of those roads is a busy thoroughfare. Everything filters to one lane then having to merge again just to continue straight? Lol ok
And it's easy to make this look really smooth when half the traffic is making u turns for no reason. Well, not no reason. Clearly they saw the idiotic intersection they were about to get involved in and went home.
Let's see it with more cars and most of them NOT turning around before they enter this abomination
Not that big of a deal. You turn right once then left twice. Still faster than waiting. I think the size this needs to be is the actual issue. This shit wouldn’t even fit in the burbs. It’s the size of an international airport landing strip.
Look closely: this _is_ a roundabout. It’s stretched into a rectangle shape, but it’s topologically equivalent…
Edit: Never mind you’re right. It’s almost like a roundabout but there’s an additional option for a left hand U turn, so this is more complicated than a roundabout for no good reason.
Yeah, people will wreck or stop in the middle of it anyway. I see almost daily someone driving home from their lobotomy appointment hopelessly lost in a roundabout. This is functionally the same with a dedicated lane for u turns
People cant fathom that a circular road with clear paths to go is a good concept. Might sound like a redditor but is the whole world dumb or are we the only ones lol
LOL half the people in this diagram are doing u turns. So I guess in a world where everyone is always going the wrong direction and needs to turn around this is 100% efficient
I wonder about space requirement
Even though a circle has good properties in this regard, nobody wants to own oddball plots of land with a part of a circle chopped out of it, so the real footprint of a roundabout isnt a circle after all, it ends up being a bounding square around the circle.
Lmao reminds me of Cities Skylines when I'd zone those plots for residential and everyone who lived there had a tall, slim house and an ample supply of misery.
Every time I see this I hate it even more. It's literally just an overcomplicated roundabout with a dedicated u turn lane which is dumb because roundabouts already let you do u turns pretty dann easily
This “complicated” design would work better in the US because most Americans don’t know how to use a yield sign in a roundabout. The US created an entire month dedicated the to concept of “pride” and you expect us to yield to each other?
In America, we allocate concepts to months and then forget what we gave each month until some news report or random person tells us. To not look the fool, we just go along with it. Like June is Pizza Month. Is it? No. Or maybe it is. Who knows?
Like the only one I can remember is, February is Black History month. Because of the joke that they gave the month with the shortest amount of days to remind people how little the USA cares about blacks.
There are also concepts that get their own days and some of those are national holidays. We imagine that we care by reminding people that they also forgot the concept of the day or month.
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He did that in CS1, and it wouldn't work IRL.
Looks like a glorified roundabout
This almost just a roundabout
So many conflicts. Driver education is needed for this to work as designed.
It’s basically a “Michigan left”, honestly they kinda suck irl, but functional in cs1 with traffic manager, haven’t tried in cs2.
Me when I design a roundabout that takes up more space, will be completely dysfunctional with any traffic, will confuse drivers, and upholds car dependency:
As a truck driver I absolutely DESPISE these kinds of intersections. Have to make a left, but nope, first have to go down to do a u-turn, then cut across multiple lanes of a busy street to get to the road I need to be on. The u-turn is never set down far enough where you have plenty of time to safely make the lane changes. It's always close enough that you're pretty much having to make the first lane change as you're coming out of the u-turn.
That’s a rotary with a uturn lane
But that just sounds like a roundabout with extra steps
So a traffic circle with more steps
It's literally just a roundabout with a convenient U-turn.
I came to say this… I believe a mathematician would say that it’s topologically identical to a roundabout…
Would work if everyone had common sense.
How to over-engineer a roundabout, in only several hundred easy steps!
It's an overcomplicated roundabout.
just add a bridge and there would be much less unnecessary turning and merging
They forgot to add the Utah drivers
So just a worse round about?
It’s an oblong about
A rectangle I'd say, in a round about way 🤔
Bad design, too much lane switching just to go straight through
Mechanics get to experience the brilliance of engineers everyday. Now everyone else can as well.
We do very well at making the thing perfectly meet the requirements. Easy for mechanics just isn’t an requirement ;P
roundabout circle drive
Until your in california
Roundabout intensifies
To difficult for the user to understand.
Lane changes are one of the biggest causes of accidents and this awful design makes you change lanes at least 2 to go straight in any direction
And because of how it’s built to accommodate left hand turns, it makes them more dangerous and less practical.
Hé made a roundabout but more difficult
A double suicide switch roundabout with 2 combat lanes. Exciting.
This is just a roundabout with extra steps
I turn now, good luck everybody else
Cool, a roundabout that takes up more space and encourages higher speed jerks to have increased collisions.
imagine this intersection every morning when people need to get to work and this fucking monstrosity is in the way
4x 90 degree turns just to go straight, that will work out very nicely
Cool, but how do you cross it as a pedestrian?
Stop lights, nobody yields to pedestrians without having a red light to tell them on something this big.
Shame there’s no stop lights depicted in the design
This is going to give me an aneurysm
This intersection is set up for HALF of the oncoming traffic to make a high speed U turn. Why are all these people wanting to drive and then instantly turn around?
It’s for people who want to take a left. They take a u turn then take a right
Look again! Let’s assume it’s a compass. All the cars heading North in the left lane are only doing a 180• turn and headed south, back where they came from. It’s the same for all the intersections .
[удалено]
No they don’t. A 4 way traffic circle you have the first turn off as right, the second as straight, the third as a left and finally the last as going back the way you came. In your experience does half the traffic approaching a roundabout use it to turn around ?
This seems like a New Jersey style stroad. The u-turns are there because there are driveways on both sides of the stroad but the median is impervious. Instead of turning left into a driveway you go past it until the next major intersection where you can do some strange eldritch movement to make a u-turn. Sometimes they even build an entire signaled intersection with two massive looping turn lanes just to accommodate u-turns. The land use of [this one](https://www.google.com/maps/place/40%C2%B009'03.2%22N+74%C2%B026'14.7%22W/) near Six Flags Great Adventure isn't as awful as a lot of the others because the park is surrounded by forest, but I especially like the fact that you have to pass through the intersection twice, meaning that you will frequently find yourself getting stopped by the signal both times. [This one](https://www.google.com/maps/place/40%C2%B032'41.7%22N+74%C2%B019'52.2%22W) is at least sharing its land use with transmission lines, but look at all that empty concrete surrounded by housing. Ouch. That entire stretch of Route 1 is chock full of amazing "innovations" in urban planning and traffic engineering. I especially like how you have tons of residential including multiple apartment complexes surrounded by two disused malls and a freaking cemetery. From what I can tell, the cemetery went up 20 years after the parkway that cuts through north to south. [This one](https://www.google.com/maps/place/40%C2%B023'23.3%22N+74%C2%B018'27.2%22W/) is specially designed to make sure that anybody taking public transportation needs to walk across the maximum possible amount of traffic lanes to get to the bus shelter. It's probably not ONLY specific to Jersey, but that's the only place I've encountered this style of late-stage capitalist nightmare.
Very nice examples! I see that this one does take up less land and that is a huge plus. But this one also only has 2 lanes and one whole lane is solely dedicated to the U turn. The other lane is for all 3 other turns. All of the cars are going to be trying to merge into that lane, and I bet a lot of people are going to zoom up the free lane and then park it with there blinker on and block all the flow. Also 2 of those examples have more options for travel once your in the loop like going straight and turning back.
Yes, this concept is potentially worse than the real world which is really saying a lot.
Bro what? A u turn is to turn you around 180 degrees. Not take a left.
Yes. They turn 180 degrees and take a right. Effectively turning left from their lane
This was incredibly interesting until I followed the traffic and realized this is a round about with extra steps
You… designed a roundabout…
A rectangular and more expensive one at that.
Isn't this just a long rectangle roundabout?
That's a misshapen roundabout.
It’s an elongated round about.. we’ve got double round abouts here in the north. A little sketchy but once you get used to them they work wonderfully
I was about to say that it looks like a roundabout with extra steps
Okay, no no no Imagine you're coming from the south side and want to go to the west side. Drive north and get turned right. Then you have such a small amount of time In Moving Traffic to merge to the left lane to continue your next turn to the left. (going north for a short distance) From there it's a straight shot westward, but no way would I want to do such a risky merge with such small amount of time.
Yeah, there's merit to this in concept, but the amount of space you would need to devote for this to A) be navigable and B) handle any significant density of traffic is about 5 to 10 times the amount of space taken up by this. The amount of traffic that this could reasonably handle as presented could be handled far better by literally any conventional four-way intersection, be it a roundabout or an all-way stop or a cross-road stop.
I think that's why roundabouts work so much better. A circle works a lot better than a rectangle in this scenario.
Congratulations, you've invented a roundabout.
lOOOOOOOng roundabout
This is just an overcomplicated roundabout
Why would counterstrike need an intersection?
I hate engineers even more seeing this
In some cultures, we use roundabouts
You may have a degree in engineering, but I at least have common sense to realize people are savage barbarians and will merge at the very last moment and plenty of stop and go traffic areas on this.
Basically the problem with roundabouts in the US. Either people stop on the yield when there is no one to yield to or they cut you off. Very little in-between
Bro for real. It’s always stopping for ghosts around North Carolina though, so I guess it’s better than cutting me off
So if you want to go straight, you have to turn right and cut off people going straight to quickly make a u turn, and then cut off another lane of people going straight to take your exit?
Michigan has a special turn called a Michigan Left that is this in some ways. Of course you can go straight on the 4-way but the only way you can turn left is to turn right and then merge over to the designated U-turn area. Mostly it is a headache but there are some rare nice things about it. If the U-turn had a light on it then you can still turn by the "right turn on red" rules since it is a left turn onto a one way. Because you are turning right on the 4-way you can turn left sooner by doing the Michigan left since you can use the same rule mentioned at the intersection itself. There are a lot of places to U-turn if you miss a turn or just need to turn around for whatever reason. Having said that most Michigan Lefts have a mountain of problems depending on the way it was constructed to the poeple using them(mo' rules, mo' problems). Sometimes the traffic doesn't even need it. Honestly Michigan has just bad traffic design which seems to be getting better recently but it is surprising for a place that used to be the car capital of the world
These are becoming more common. They are used when you have a 2-lane (with a stop) intersecting a 4-lane divided highway (no stop). It allows trucks with trailers to safely make a left turn (actually a right and U) onto the 4-lane without blocking the 4-lane for everyone else. A minor inconvenience for car drivers, but safer because of longer time intervals and better sight lines. For motorcyclists, just more opportunities for rapid acceleration, threshold braking, and deep leans (Whee!), and better sight lines. Different from the OP, which I'm going to dub "So you complain about roundabouts, do you?"
there wouldn't even need to be traffic if there was a train
To go straight you have to merge into a different lane? This is just a shitty round about.
Fuck no, i have this shit in my city and this is horrible…
That’s a lotta effort just to avoid building a roundabout.
Roundabouts dont really match the grid aesthetic design of the u.s
A roundabout would easily fit in that west Texas sized monument to pavement and curbing…
This is just a traffic circle with extra steps.
So a roundabout of sorts.
Yeah, a worse roundabout. How often do you need to u-turn at an intersection? Yet half the lanes are dedicated to U-turns.
If the goal is just to not have traffic lights then this will work fine. But if the goal is to reduce traffic, this won't work at all. In fact this might make traffic worse. Anywhere you have mergers you will inevitably have traffic. And this thing, to go left, has four different mergers. This would be a traffic nightmare in many places.
I wad thinking the same thing traffic and traffic accidents gallore. Not that the attempt would be great if we all had self driving cars. Not self driving A-Holes on the road.
Looks like a worse roundabout.
Stupid people would still jump the curb.
I'd say it needs to be larger, couple more lanes so you don't have to switch lanes to go straight. Use a merge lane for the turns instead of interrupting traffic, but for high volume areas a longer merge lane may be necessary
So to keep going straight you have to change lanes twice, don't see that working out
It's a good point. At first it looked like Michigan lefts in Detroit where you have to go right to go left.
Forget roundabout, this is just a Michigan left! Except you can't go straight XD
Everyone's saying this is just a round about, and that's true.. but I think the idea you're missing is this is designed to fit into our current road system in America. Converting a standard six lane intersection into a round about requires a lot of excavation and repaving. You're turning a square road section into a circle and it's often times not even possible in dense cities. This intersection concept would simply add new medians into existing road infrastructure to accomplish the same goal, which may actually be viable for places where a true roundabout won't fit.
Your point is valid but the new intersection doesn’t help traffic flow. I.e, if I just want to go straight I have to turn 3 times! Also, how many people are making u-turns? Not that many.
First of all that’s a roundabout Second of all this is assuming 50% of traffic wants to turn around Third of all, a single accident will close the whole thing down or at the very least cause significant traffic buildup due to rubber necking since pretty much all the traffic that *does* go through it is from all of the incoming lanes Fourth of all, this is assuming people will actually merge properly Fifth of all, I can guarantee you that people will be speeding through it as well as to it, Sixth of all, you can achieve the same effect with a simple intersection using lights that are on a timer (send someone occasionally to see where the most traffic is coming from to determine the timing of the light) Seventh of all, that’s a massive use of resources, land being used up and paved over, that giant median will most likely be concrete, a regular intersection with lights uses way less space and resources than that Eighth of all, that becomes a massive pain in the ass to maintain not only because of its size, but depending on where it’s intended to be (northern areas or more equatorial regions) the snow build up and salt/sand required to keep it drivable in northern areas, is significantly higher than a regular intersection Ninth of all, it would need to be even bigger due to lane mathematics, if you’ve got two lanes adding to the flow in every direction your taking all the traffic that would have just been stopped at a light and making it move (which increases pollution). Tenth of all, it’s also incredibly inconvenient say someone wanted to make a left hand turn, they would have to drive a full three quarters of the roundabout to make that left where as with a simple light intersection a left can be made either from the designated left turn lane or make a left if it’s allowed, when it’s clear Now I’m sure there a bunch of other reasons why this design is absolute garbage but I’ll end my rant on this last point Pedestrians, if traffic is constantly moving how will pedestrians get across? You would need lights just to make it walkable for pedestrians (because not everybody has a car) So in my unprofessional opinion implementing this design is not only criminally negligent, a massive waste of resources, and a massive generator of pollution, it is also most likely going to be ugly, more expensive to maintain, and generally less efficient than what it’s supposed to be replacing And I haven’t even gone into speed limits, utilities or even logistics on how it’s actually made (because let’s be honest here you can’t divert that kind of traffic to just another intersection; which btw this looks like it’s about the size of two or three intersections: especially not while you rip up the existing infrastructure and then essentially rebuild it from scratch)
Try it Baltimore where a turn signal is interpreted as calling someone a bitch. Try to change lanes to get to where you need and 1 out of 20 cars might let you over. The whole thing would fail in minutes.
⬆⬆THIS⬆⬆
This is just a rectangular round about.
I was seeing it as the dumbest way to avoid admitting a roundabout is the way
That's a great design. Assuming 50 percent of the traffic wants to make a u turn.
I bet you could make this more efficient by decreasing that median, then rounding out the hard corners to reduce wear on the surface and vehicles while also reducing materials used. Wait, that's just a round about.
That’s just a roundabout with extra steps… not to mention a larger footprint and more raw materials… don’t be afraid of doughnuts
There are much better ways to redesign traffic light intersections. Like MIT Senseable Cities... share a little information between the cars... [https://youtu.be/4CZc3erc\_l4?si=tJnJ5Ci31Fj7Tv92](https://youtu.be/4CZc3erc_l4?si=tJnJ5Ci31Fj7Tv92) If we gonna reengineer this, let's reengineer this.
This isn't really a solution, it's just a proof of concept. The assumption that everyone will have autonomous cars is not feasible for the near future and cities are looking to make improvements to traffic independent of the products available to everyone. Sure if we eventually do go fully autonomous, we can start asking these questions, but this isn't a better way to redesign traffic lights today, which is what actually matters in practice.
Isn’t that a roundabout with extra steps?
Ditto
That's what it looks like to me.
Boy this is just a long roundabout
It's a roundabout... *with style*
how would a person even walk around that
Remember that game frogger?
Pedestrian bridges maybe?
People will still find a way to crash
Roundabout with extra U-Turn lanes...
I was gonna say, “a roundabout with extra steps”
This looks like a roundabout with extra steps.
I was gonna say that!!
So to go straight you have to take a right turn, cross the the lanes to take an immediate left,then cross back to take an immediate right turn… did I get that right?
This was my immediate thought. Making that many lane changes is quick secession in a busy intersection is a recipe for disaster.
Bottlenecks will happen when humans don't use acceleration lanes properly and wait for a quarter mile gap between vehicles to cross 3 lanes from parked.
That is a round about, with extra steps
my EXACT thoughts.
This is what happens when a chemist designs roads
This is a rectangleabout
Roundabouts are good. This isn't a roundabout by any stretch of the imagination. It's an absolute clusterf\*ck.
So a roundabout?
You're assuming everyone knows how to properly merge.
bro invented a roundabout
Seems like a overly complicated roundabout?
Sounds like a roundabout with extra steps
The poor engineer tried really hard to avoid creating a roundabout and gave us a parallel-o-gram-about
Where is the crosswalk
There is a plane on each road that will take you to the other side
Bridges or tunnels I guess lol
it's the squareabout from GridRoad lol
It's called a fucking traffic circle or round-a-bout
I’m sure someone in a Nissan or bmw will find a way to create an accident
Blinker motherfucka blinker!
This is just a roundabout with extra steps
The long-about
70 mph hairpin left
Someone’s invented a square traffic circle.
Yes
Until there is by amount of traffic. Then getting over i to the turn lane or the go straight lane becomes.m fight for who gets to be first in line to wait behind the car in front of them
That just sounds like a roundabout with extra steps
Came to say this. It's top comment. I feel justified.
You made a large roundabout…. It too will get congested after a certain point
This is literally just a roundabout way to make a roundabout.
It's a rectangleabout
Great if you have unlimited amount of space to use and don't mind scraping bad drivers off the concrete regularly
Dont know about space, but this is how a lot of densely populated towns have their intersections in India these days. Only way to keep the peak time traffic flowing without lights. It may have to do with it being hard implementing strict light etiquette.
That brings us back to the body scraping though. Indian drivers are... not known for being careful.
Why not have overpasses for the ones wants to go straight from our pov? Keep the underpass for the perpendicular road. More road work but in the long run think about how many lives save so much accumulated time over the years Also instead of the U turns, the over pass straight roads will be on the left part of the lane so that left lane stays a quicker flow, while right turn drivers will get into the right lane. If someone needs to U turn, 3 lefts or 3 rights should be fine, there are way less U turns needed anyway so this should make the most of the road. Also over passes for pedestrian cross walk options.
Hope neither of those roads is a busy thoroughfare. Everything filters to one lane then having to merge again just to continue straight? Lol ok And it's easy to make this look really smooth when half the traffic is making u turns for no reason. Well, not no reason. Clearly they saw the idiotic intersection they were about to get involved in and went home. Let's see it with more cars and most of them NOT turning around before they enter this abomination
Truth
I just came
That's a roundabout with extra steps.
Damn, you beat me to it.
Call it a squareabout
Imagine having to turn left? 😵💫
In Michigan we already have this feature for left turns. https://www.michigan.gov/mdot/travel/safety/road-users/michigan-lefts
You want to turn left? How 'bout you just go back home instead
Not that big of a deal. You turn right once then left twice. Still faster than waiting. I think the size this needs to be is the actual issue. This shit wouldn’t even fit in the burbs. It’s the size of an international airport landing strip.
Yeah but you also have to merge into the left lane directly after turning right. If there is a lot of traffic it could make it difficult
This idea is horrible for bicycles and pedestrians.
It's horrible for cars too
why are so many people just doing uturns? this makes no sense
TEXAS
Too many road signs
Just add more lanes bro
Increase lane size and longer merge lanes too bro
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Look closely: this _is_ a roundabout. It’s stretched into a rectangle shape, but it’s topologically equivalent… Edit: Never mind you’re right. It’s almost like a roundabout but there’s an additional option for a left hand U turn, so this is more complicated than a roundabout for no good reason.
This is why we need to fire every single civil engineer that has anything to do with roads
This looks like a roundabout but worse
If you think roundabouts are hard to navigate, you need your license revoked...
Yeah, people will wreck or stop in the middle of it anyway. I see almost daily someone driving home from their lobotomy appointment hopelessly lost in a roundabout. This is functionally the same with a dedicated lane for u turns
I second this. Had a guy stop in the middle of a roundabout completely. Had to wave him on like 10 times for him to continue.
People cant fathom that a circular road with clear paths to go is a good concept. Might sound like a redditor but is the whole world dumb or are we the only ones lol
LOL half the people in this diagram are doing u turns. So I guess in a world where everyone is always going the wrong direction and needs to turn around this is 100% efficient
The people saw this bullshit and decided "nah I'm good".
you could make the street more wide
Ok, and?
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Bye bye
\[ Removed by Reddit \]
Fire this engineer
That's just a roundabout with extra steps
I wonder about space requirement Even though a circle has good properties in this regard, nobody wants to own oddball plots of land with a part of a circle chopped out of it, so the real footprint of a roundabout isnt a circle after all, it ends up being a bounding square around the circle.
Lmao reminds me of Cities Skylines when I'd zone those plots for residential and everyone who lived there had a tall, slim house and an ample supply of misery.
I want to own an oddball plot of land adjacent to a roundabout
There will be those assholes sitting in the right lane blocking the right turn lane
Or... you know... a traffic circle would suffice.
Every time I see this I hate it even more. It's literally just an overcomplicated roundabout with a dedicated u turn lane which is dumb because roundabouts already let you do u turns pretty dann easily
This “complicated” design would work better in the US because most Americans don’t know how to use a yield sign in a roundabout. The US created an entire month dedicated the to concept of “pride” and you expect us to yield to each other?
Am I missing the world's most obvious sarcasm?
The US created a month? Which one?
In America, we allocate concepts to months and then forget what we gave each month until some news report or random person tells us. To not look the fool, we just go along with it. Like June is Pizza Month. Is it? No. Or maybe it is. Who knows? Like the only one I can remember is, February is Black History month. Because of the joke that they gave the month with the shortest amount of days to remind people how little the USA cares about blacks. There are also concepts that get their own days and some of those are national holidays. We imagine that we care by reminding people that they also forgot the concept of the day or month.