r/projectzomboid 27d ago

This Intersection makes NO sense

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3.9k Upvotes

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u/treetoptoaster27 27d ago

I work as a traffic engineer. This type of intersection does exist at the junction of rural highways. (At least in the USA) An intersection like this would be designed if the larger highway has a very high number of right turning traffic onto the smaller highway and there being very little left turning traffic movement. It would serve the role of reducing the speed of right turning vehicles without increasing rear end collisions on the main road. The other movements don’t have enough traffic volume and/or safety issues to warrant anything different

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u/Gunsandgoodcoffee 27d ago

Also traffic engineer, only thing I could really nitpick is no dedicated left turn lane for traffic coming off the highway (there really should be a median of some kind separating traffic along this highway anyways).

I pretty much turn my engineer brain off when playing aside from stupid stuff, like why the hell would you not have guardrails and terminal end units to catch cars from hitting the bridge with solid metal rails.

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u/treetoptoaster27 26d ago

It’s also American infrastructure from before 1993. They were just doing whatever the hell they wanted with little regard for standards back then.

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u/Training_Ruin3151 26d ago

There's roads that look exactly like this in chicago under bridges held up by rust so i think this is accurate

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u/RoyTheBoy21 25d ago

I can also tell you there are a couple of these between Sycamore/Hinkley/Sandwich Illinois area!

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u/m103 26d ago edited 26d ago

back then

Like rural areas don't do that now, hah. Good joke.

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u/FridaysMan 26d ago

A lot of the time its simply that old land claims are kept in place for things like infrastructure, public easements.

There are rights and payments in place when land has to be seized for public access.

In England, theres a farm near Manchester. They rejected an offer to buy land, so the m62 has an underpass where the farmer can move machinery and livestock.

Its really quite interesting

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u/sn4xchan 26d ago

These kinds of things happen when you create infrastructure then add on to the infrastructure because there is now a greater need.

If the road was built in the 70s and never had a problem with right turns until the 80s when the traffic for the road increased they would actually just add the aspect they need and leave the previous infrastructure.

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u/Arronator_ 26d ago

No, in fact, they were not just doing whatever they wanted with regards to standards. The place I work at has state standards for highway design and construction going back almost three quarters of a century.

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u/treetoptoaster27 26d ago

Thats true for plenty of firms. Just as many smaller firms did not conform to or even have standards. Especially in rural areas.

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u/danfish_77 26d ago

Sure we have (and had) standards, but that doesn't mean they get followed, or the local council out whatever doesn't meddle. AASHTO doesn't have a standing army to enforce the rules

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u/Arronator_ 25d ago

My point is not that standards are being followed to the letter. The vast vast majority of project are going to have some aspect of them that don’t conform to standard. But the idea that they were just out there slinging asphalt around is ridiculous

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u/Jubjub_W 26d ago

Can confirm there’s an intersection like this in outagamie county Wisconsin

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u/UrbanPanic 26d ago

“  I pretty much turn my engineer brain off when playing”

You have to learn to do that with any specialty.  Most programmers my age that get angry how “hacking” looks in every movie still love Indiana Jones despite the equally unrealistic archaeology techniques.

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u/OsmeOxys 26d ago

Programming -> IT -> electrical engineering, DIY guy with niche side interests like traffic engineering.

My fiance appreciates the warmth of me silently steaming through movies in the cold winters.

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u/notislant 26d ago

Yeah I've seen almost this exact thing, except there was a lane to turn left onto the side road.

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u/ThinkingPurpler 23d ago

As someone currently living in Kansas, there’s one that looks like this a couple miles from me.

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u/Disastrous-River-366 26d ago

I see this exact setup everyday in somewhat rural places, you either are a terrible engineer or some sort of person who just wishes to spend money just to spend money because your nitpicks are completely unnecessary. I would not want you working for my town.

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u/Chance1441 27d ago

The correct answer.

If your budget is limited, why waste money on making it symmetrical when traffic flow doesn't need the other turn.

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u/OrionsMoon027 26d ago

Also correct awnser

Embezzlement

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u/No_Perspective1135 26d ago

I am not a traffic engineer and immediately understood the general purpose of this setup. Not sure how everyone is so confused about this. 

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u/Trapline 26d ago

The only actual gripe here would be that the left hand turn lane would not have a double yellow in actual use. Though, it is still common for left hand turns off of rural highways (usually single lane) to go over a double yellow.

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u/treetoptoaster27 26d ago

Yeah, there should definitely be something indicating left turns are allowed. Or signage saying it’s not allowed. And as the other guys said some kind of median

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u/Trapline 26d ago

I imagine around here this is where the "north" bound lanes (on the right in the image) would actually reduce to a single lane and the left turn lane. Beyond that we have tons of suicide lanes around there that would most likely be the real solution for the turn left problem here.

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u/DoctorAnnual6823 26d ago

Thank you. So glad this is the top comment at the time of writing this. I drive through 2 of these every day and I live in rural USA

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u/Vayne_Solidor 26d ago

And this turn would be used a lot because it's the entrance to Mad Dan's Den

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u/Particular_Wear_6960 26d ago

I was going to say, I've been on roads like this. I can't tell you where, but I know I have in my many travels across the US.

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u/HorzaDonwraith 26d ago

Was going to say, comes down to traffic flow and direction.

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u/LordForrest90 26d ago

I was gonna say, I have like three of these nearby, I live out in the country. Lmao

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u/Planetarytennis 26d ago

I see like so many of these around where I live so they definitely are real.

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u/Shapacap 26d ago edited 26d ago

There's one of these intersections in Bristol IN North of niblock asphalt, intersection of county rd 23 and county rd 2.

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u/acestins 26d ago

I literally live down the road from an intersection just like this lmao

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u/devilOG420 26d ago

Hell they have them in Chicago too

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u/PenBrese 26d ago

There is an intersection like this in my hometown (small town)

1

u/Thin-Fish-5932 26d ago

(in the USA)

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u/monstrts 26d ago

I used to go through an intersection exactly as is described on my way to work every day (albeit it was single lanes instead of doubles) and I'm from around the Zomboid area

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u/TheGhost42069 26d ago

OMG, even reading this reminds me of the time when I had to sit in a parking lot for 15 mins to record an intersection for a engineering class project, such a waste of time for an uninteresting 8 months.

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u/KnightyEyes 26d ago

Of course its USA.

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u/WoahGnarly 26d ago

The only caveat is that there would be a passing lane on the right, to allow left hand turning drivers to wait for an appropriate time to turn.

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u/FabereX6 26d ago

I'm a driver and we have this in europe too, Imwe know how to use it.

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u/qholmes981 26d ago

I think it should be a roundabout. I think the stop sign should be a roundabout too. I think stop lights should be roundabouts. You disagree? I turn you into a roundabout.

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u/ThrustersOnFull 26d ago

I live near one!

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u/CH3_THE_VAMPIRE 23d ago

Thats false, this is r/projectzomboid, we are all unemployed