[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / r / s / t / u / v / vg / vr / w / wg] [i / ic] [r9k / s4s / vip / qa] [cm / hm / lgbt / y] [3 / aco / adv / an / asp / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / qst / sci / soc / sp / tg / toy / trv / tv / vp / wsg / wsr / x] [Settings] [Search] [Home]
Board
Settings Home
/n/ - Transportation

Name
Options
Comment
Verification
4chan Pass users can bypass this verification. [Learn More] [Login]
File
  • Please read the Rules and FAQ before posting.
  • There are 54 posters in this thread.

05/04/17New trial board added: /bant/ - International/Random
10/04/16New board for 4chan Pass users: /vip/ - Very Important Posts
06/20/16New 4chan Banner Contest with a chance to win a 4chan Pass! See the contest page for details.
[Hide] [Show All]



For me it's the Par-clo interchange.
>>
>>1330349
>that much land wasted on cage infrastructure
Rip it up and put in a rail line.
>>
I love things that are almost good
>>
>>1330357
No left turn needed to get on the highway
It is good
>>
>>1330358
>Still have two traffic lights
>>
File: 407_001_LowRes-full.jpg (682 KB, 1920x1080)
682 KB
682 KB JPG
>>1330359
Only to exit the highway, unless it's a 6 lane arterial road and you have the space you're not going to have merge on merge off interchanges. Sure full cloverleafs are cool but are inordinately expensive
>>
>>1330358
Parclo B4 > A4

>>1330359
>two
In effect one if it's a Parclo B4.
>>
>>1330368
What's the difference
>>
File: high-five.jpg (1.17 MB, 2600x1733)
1.17 MB
1.17 MB JPG
For me, it's the High Five interchange in Dallas, TX

Level I: US 75, an eight lane highway, four lanes going each way
Level II: The junction of the two six-lane frontage roads, each having three through lanes in each direction, left-turn lanes and turnarounds, and easy access to US 75 and I-635
Level III: I-635, ten regular lanes, five going each way, and four HOV lanes (two going each way) separated by barriers
Level IV and V: Direct connection ramps (two levels), eliminating the left exits of the modified cloverleaf
>>
File: vomit.jpg (7 KB, 259x195)
7 KB
7 KB JPG
>cageway without rapid transit in the median
>>
File: kino.jpg (239 KB, 1005x1132)
239 KB
239 KB JPG
I just want to post this interchange because I think it's very aesthetic. Sometimes they call it the fishtail interchange.


>>1330412
>Rapid transit in the median and not in it's own ROW
That's a yikes for me. Who wants to walk over some interstate to get on a train? Horrible for any walkable neighborhood or TOD surrounding stations.
>>
>>1330349
Why would you make an entire thread about something so mundane and pedestrian as a goddamned highway interchange?
>is this some sort of bizzarre bait?
Please stop wasting threads, thanks so much.
>>
File: tFzjYwt.jpg (1003 KB, 1373x906)
1003 KB
1003 KB JPG
>>1330491
Fine, spaghetti road thread then
>>
File: off ramp.png (104 KB, 599x887)
104 KB
104 KB PNG
>a literal two-mile on-ramp
>>
>>1330491
kys
>>
File: R_U18_Breslauer_Str.jpg (244 KB, 792x523)
244 KB
244 KB JPG
>>1330415
>>Rapid transit in the median and not in it's own ROW
>That's a yikes for me. Who wants to walk over some interstate to get on a train? Horrible for any walkable neighborhood or TOD surrounding stations.
This. Transit lines on highway medians are dystopian as fuck
>>
File: p790755.jpg (149 KB, 1200x770)
149 KB
149 KB JPG
Here a picture of the Metropolitan expressway (Hwy.40) in Montreal in the late 70s. One of the ugliest freeways that still stands today and divides two neighborhoods and is a bitch to cross by foot or bike.
>>
>>1331028
In Toronto we have the Gardiner expressway that cuts the city off from the lake, especially in the west part of Toronto.
I'd be in favour of any better pedestrian crossing over a highway
>>
Has engineering gone too far?

https://www.youtube.com/watch?v=V6iL0cIQyBk
>>
>>1331097
How come we don't have any of these in Dallas
>>
>>1331097
The thing that really bugs me about this is that only three of the four crossings have crosswalks, which makes it blatantly clear that people people who walk (and this necessarily includes transit users) are merely an afterthought, and if they exist at all are given the lowest possible priority and the least efficient route to use. Ditto for "bike boxes" - nobody is going to use those because they break traffic flow and force cyclists to wait at least one extra light cycle at a spot that may be marginally safer, but nobody who isn't already a dedicated road cyclist will be confident enough to use them, so they're a total waste of time. It's just another public space that makes it clear that if you don't drive a car there you're a second-class citizen.
>>
>>1330349
Needing redlights when highways meet 0/10 don’t recommend
>>
>>1330387
Sir Mixmaster’s a lot.
>>
>>1330491
>/n/ - Transportation
>”Threads about bikes and trains only!”
>>
>>1331146
I don't really get why anyone would give a shit about buses and subway trains, either. Actual trains, maybe a little. Planes? Somewhat interesting. Boats? Ships? Meh.
>>
>>
>>1331156
If you don't get it then why come into these threads? Just go back to your bike threads.
>>
File: ramp.jpg (53 KB, 699x655)
53 KB
53 KB JPG
Here's some quality Australian road design for you.

You have to go through a tram station and set of traffic lights. Instead of just taking a small ramp over and merging.

Why does this country hate proper interchanges?
>>
>>1331132
>makes it clear that if you don't drive a car there you're a second-class citizen.

Because you are.
>>
>>1331069
Yes the gardiner was built around the same time as the Met in Montreal. Elevated expressways in tight areas were all the buzz around 1955-70. At least the gardiner has a shoulder, the accidents on the elevated section of the met always cause huge traffic jams because of the lack of these
>>
How would you solve this?
>>
>>1331201
1. Stack interchange, but it will be ugly as fuck and probably piss off the residents

2. Roundabout, not as efficient as stack, but will be much more aesthetically pleasing

Stoplights are the worst in terms of traffic flow, but provide safe pedestrian crossing at least
>>
>>1331202
Currently it is indeed a combination of a roundabout and many traffic lights. But these are all busy highways and traffic builds up easily.

I was hoping /n/ would know some grand design to fix it smoothly.

There is a live cam on the local news bc it is easy news, you always know you can report traffic there is there is nothing else interesting
https://www.catve.com/trevo-cataratas
>>
>>1331201
Big roundabout with a few flyovers connecting the busiest sections of road
>>
>>1331207
>I was hoping /n/ would know some grand design to fix it smoothly.
Replace all roads with tram lines and bike paths
>>
>>1330415
They're not perfect but they're better than nothing.
Plus there's nothing more cum-guzzling-grin-inducingly satisfying than zooming past a wagie cagie stuck in traffic in a nice air conditioned train
>>
>>1330349
Whenever I see one of those I know nobody gives a shit about property values or walk score
>>
>>1331132
>It's just another public space that makes it clear that if you don't drive a car there you're a second-class citizen.
True suffering. Where I live, it feels bottom-class, not even second-class, to not have a car.
>>
File: spag.jpg (174 KB, 895x800)
174 KB
174 KB JPG
>>1330356
>>1330349
for me its the Spaghetti loop
>>
File: TFt5Wrm.jpg (989 KB, 1374x906)
989 KB
989 KB JPG
>>1331353
I too like spaghetti
>>
>>1331142
The left right toad is an asterial road to serve the highway
Probably coming out of a residential area
>>
>>1330349
For me it's the diamond interchange
>>
>>1331486
It’s called a diverging diamond you utter pleb. A diamond intersection is something else. Diamond intersections are standard in most rural area and some more urban areas.
>>
>>1331104
Anything new like that will get put in mckinney/prosper/Frisco first
>>
>>1331196
Oh my god. I’d hate that in a truck
>>
>>1331486
are red and pink grade separated in the middle?
>>
>>1332052
No. It's attractive because it's cheap to make despite having very few phases.
>>
File: 1557800241733.jpg (318 KB, 978x778)
318 KB
318 KB JPG
>>1330349
I added solar panels and tunnel access buildings
>>
>>1332068
Fuck solar, there's a nuclear plant out of shot that supplies more than enough power for a developed nation. Plant trees there instead.
>>
>>1332062
so stop lights on an interchange?
>>
>>1332083
Yes, it's not used for two motorways.
>>
The solution to all traffic problems is reduce traffic!
>>
>>1331132

>Pedestrians
Don't care
>Bicyclists
Don't care
>>
>>1332213
>your opinion
Don't care
>>
>>1330356
The intersection for trains would be 5 times bigger?
>>
>>1331097
Wouldnt a roundaobut be easier?
>>
>>1332223
Americans can’t navigate roundabouts.
>>
>>1331097
You may not like it, but this is what peak performance looks like.

>>1332223
>easier
You don't compare this way.
If you mean how roundabouts can be easily upgraded to two-level or three-level, that's irrelevant.
>>1332224
A "CFI"/PFI, being signalized and with crossovers, handles like well over twice the capacity of even a signalized turbo-roundabout.
Need to look up the delay.
>>
File: DCMI-Flow.jpg (203 KB, 3200x1556)
203 KB
203 KB JPG
>>1332052
You are looking for this,
>>
>>1330371
A = Loop quadrant before crossing minor road
B = Loop quadrant after crossing minor road
4 = 4-quadrant = 6 slip roads
>>
File: AAAMap[1].jpg (41 KB, 265x315)
41 KB
41 KB JPG
>>1332052
Only in Baltimore. At least it used to be until it was renovated into a regular stack.
>>
File: the magic of swindon.jpg (242 KB, 1093x888)
242 KB
242 KB JPG
this
>>
>>1332405
can you summon satan with that?
>>
>>1332410
You need the M25 for that.
>>
>>1332405
This looks awful
>>
File: 1523962481790.jpg (20 KB, 328x396)
20 KB
20 KB JPG
>>1330415
>left hand exits
>left hand entrances
>>
>>1332808
It works with reduced traffic volumes.
>>
File: highway.jpg (510 KB, 1280x654)
510 KB
510 KB JPG
>>1332818
Literally anything works if you reduce traffic enough.
>>
File: assafd1234234652.jpg (186 KB, 1144x694)
186 KB
186 KB JPG
I like spuis. There are only 2 in my state as far as I know (Parks Highway - Seward Meridian Pkwy. and Johansen Expressway - College Rd.) but they are more aesthetic than our diverging diamond.
>>
>>1333049
The SPUI is hated by /n/imbys but having used them I think they're better than many designs that predate it but it looks like the diverging diamond is the iteration of choice these days
>>
File: Untitled.jpg (1.19 MB, 2476x1070)
1.19 MB
1.19 MB JPG
>>1332808
dont come to connecticut then

bonus points for traffic lights on a highway
>>
>>1333051
>The SPUI is hated by /n/imbys
How?
>>
>>1333067
Probably some retarded complaints that fringies and pedestrians feel intimidated by it
>>
>>1333137
At a glance it looks bad for peds, but on closer inspection the individual crossing distances don't look too bad.
>>
>>1333137
>not just building a pedestrian walkway over it

Why not just eliminate risk altogether?
>>
>>1333191
>money is infinite
>>
>>1333067
>>1333137

I don't really remember why but when I've seen threads about interchanges SPUIs always seem to be considered shitty
>>
File: 9666948-3x2-700x467.jpg (86 KB, 700x467)
86 KB
86 KB JPG
>>1331486
Eww, weaving. Anyway, not as bad as the cloverleaf, has its uses, but not a godsend.

>>1333049
Based, unless you cock it up like pic related.
>>
>>1333518
>Eww, weaving.
I don't see that you really weave at all in that one
>>
File: ddi.png (1.78 MB, 1434x1061)
1.78 MB
1.78 MB PNG
>>1333527
Hmm, you're right. I was referring to the middle bit where the off ramp turning left would add a lane to the surface road that also turns left onto the on ramp, like in the pic (https://www.google.com/maps/place/40.81739,-96.78766). Most designs seem to be signalised or use give way signs though, which I suppose does away with that problem.
>>
>>1332399
If both roads crosses over, it'a diverging windmill.

>>1333527
Try harder.
>>
>>1333051
>it looks like the diverging diamond is the iteration of choice these days
Simply because >>1333305, and that it's very specific. If you have more turning traffic or space, try to pick something else.

>>1333318
The junctions are usually shitty enough that an SPUI has to be used to handle them. It's not very pretty functionally, but it works, which is why I kinda like it.

>>1333049
Theoretically a Parclo can also be designed single-point.
>>
>>1333067
>4 pedestrian crossings required
>>
File: bm7ol2E.jpg (165 KB, 768x960)
165 KB
165 KB JPG
>>
>>1333789
>pedestrian crossings
Literally not worth worrying about
>>
>>1333790
based
definitely the best one here
>>
>>1333789
Very funny. Nice try.

>>1333790
There's this nice vid on the Radial Route 5 Tokyo-Hachioji Road joining it: https://www.youtube.com/watch?v=1obBNeKZ0DI
>>
>>1332427
It actually flows very well.
>>
>>1333790
Is that all free-floating? Can't see a single supporting pillar in the picture.
>>
>>1334592
Make an appointment with your optician, mate.
>>
>>1332232
Maximum efficiency. I like it!
>>
>>1333057
>traffic lights on a highway
fucking Breezewood...
>>
>>1333049
How do they not collide?
>>
>>1336142
No one comes close to colliding during turns. You can even see what looks like a statue in the middle of the intersection



Delete Post: [File Only] Style:
[Disable Mobile View / Use Desktop Site]

[Enable Mobile View / Use Mobile Site]

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.