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Vid's Typology of Simple, Complete Service Interchanges (and scavenger hunt)

Started by vtk, November 26, 2012, 11:50:22 PM

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vtk

November 26, 2012, 11:50:22 PM   Last Edit: December 23, 2012, 12:02:02 AM by vtk
For some reason, last year I came up with a classification scheme for service interchanges.  This scheme covers most complete service interchanges.  Not included are SPUIs, or anything with flyovers or flyaround ramps.  Roundabouts, channelized right turns, or signalized right-turn-only ramp termini are considered minor variations on the basic types in this scheme.  Also, I'd like to find real-world examples for each design, so I suppose a scavenger hunt is in order!
















































Diagram
(drive on right)		VTSCSI
Code		Ontario
Parclo
Code		Other NamesExamples (up to three)
A00Diamondhttps://maps.google.com/?ie=UTF8&ll=39.977597,-83.259802&spn=0.011822,0.021865&t=m&z=16&vpsrc=6
A01Parclo
Half-Folded Diamond		https://maps.google.com/?ie=UTF8&ll=39.429564,-84.079614&spn=0.011917,0.021865&t=m&z=16&vpsrc=6
A02Parclohttps://maps.google.com/?ie=UTF8&ll=39.932446,-82.830219&spn=0.01183,0.021865&t=m&z=16&vpsrc=6
A03Parclo
Half-Folded Diamond		https://maps.google.com/?ie=UTF8&ll=39.562774,-84.269042&spn=0.011894,0.021865&t=m&z=16&vpsrc=6
A04https://maps.google.com/?ie=UTF8&ll=40.100611,-82.924418&spn=0.011801,0.021865&t=m&z=16&vpsrc=6
A05Strange Parclohttp://goo.gl/maps/O7gsC found by pianocello and Brandon
A06Parclohttps://maps.google.com/?ie=UTF8&ll=39.88939,-82.881267&spn=0.011838,0.021865&t=m&z=16&vpsrc=6
A07Strange Parclohttp://goo.gl/maps/kbbHZ found by PennDOTFan
https://maps.google.com/?ll=40.27635,-74.825993&spn=0.007662,0.018389&t=m&z=16 found by Steve
A08Parclohttp://goo.gl/maps/D7zfV found by CentralCAroadgeek
https://maps.google.com/?ll=40.327555,-74.64195&spn=0.007656,0.018389&t=m&z=16 found by Steve
A11B2Parclo
Folded Diamond
Twisted Diamond		http://goo.gl/maps/KeEOi found by PennDOTFan
http://goo.gl/maps/XNDSw found by Kacie Jane
A12B3Parclohttps://maps.google.com/?ie=UTF8&ll=39.93136,-82.914848&spn=0.01183,0.021865&t=m&z=16&vpsrc=6
A13AB2Parclo
Folded Diamond		https://maps.google.com/?ie=UTF8&ll=39.974308,-83.09844&spn=0.011823,0.021865&t=m&z=16&vpsrc=6
A14http://goo.gl/maps/zb8WW found by PennDOTFan
A15Strange Parclohttps://maps.google.com/?ll=41.093931,-74.155365&spn=0.003784,0.009195&t=m&z=17 found by Steve
A16AB3Parclohttp://goo.gl/maps/WGH8d found by kphoger
A17Strange Parclo
A18Parclohttps://maps.google.com/?ll=39.756593,-75.130348&spn=0.008166,0.018389&t=m&z=16 found by Steve
https://maps.google.com/?ll=40.206246,-74.050684&spn=0.007669,0.018389&t=m&z=16 found by Steve
A22B4Parclohttp://goo.gl/maps/1Ufs1 found by kphoger
A23AB3Parclohttp://maps.google.com/maps?hl=en&ll=40.538672,-88.994086&spn=0.008463,0.021136&t=h&z=16 found by Brandon
A24
A25Strange Parclo
A26AB4Parclohttps://maps.google.com/?ie=UTF8&ll=40.032642,-83.12273&spn=0.011813,0.021865&t=m&z=16&vpsrc=6
A27Strange Parclo
A28Parclohttps://maps.google.com/?ll=40.729389,-74.538031&spn=0.00761,0.018389&t=m&z=16 found by Steve
A33A2Parclo
Folded Diamond
Twisted Diamond		http://goo.gl/maps/JJlk1 found by pianocello
A34https://maps.google.com/?ll=41.187213,-74.037359&spn=0.007557,0.018389&t=m&z=16 found by Steve
A35Strange Parclo
A36A3Parclohttp://goo.gl/maps/nXtaI found by CentralCAroadgeek
https://maps.google.com/?ll=40.374373,-74.147844&spn=0.00765,0.018389&t=m&z=16 found by Steve
https://maps.google.com/?ll=40.52512,-74.45044&spn=0.007633,0.018389&t=m&z=16 found by Steve
A37Strange Parclohttps://maps.google.com/?ll=40.2493,-74.727759&spn=0.007665,0.018389&t=m&z=16 found by Steve
A38Parclohttps://maps.google.com/?ll=40.893289,-74.126687&spn=0.003796,0.009195&t=m&z=17 found by Steve
A44Butterflyhttp://goo.gl/maps/FygvE found by kphoger
https://maps.google.com/?ie=UTF8&ll=45.409689,-73.146372&spn=0.021572,0.027809&t=m&z=15&vpsrc=6 found by Dr Frankenstein
https://maps.google.com/?ie=UTF8&ll=45.347651,-72.785282&spn=0.021595,0.027809&t=m&z=15&vpsrc=6 found by Dr Frankenstein
A45
A46
A47
A48https://maps.google.com/?ll=40.903069,-74.255068&spn=0.00759,0.018389&t=m&z=16 found by Steve
A55Strange Parclo
A56Strange Parclohttp://goo.gl/maps/0YdJI found by PennDOTFan
https://maps.google.com/?ll=39.008797,-74.868414&spn=0.007803,0.018389&t=m&z=16 found by Steve
A57Strange Parclohttp://maps.google.com/maps?hl=en&ll=41.51163,-88.080955&spn=0.008339,0.021136&t=h&z=16 found by Brandon
A58Strange Parclo
A66A4Parclohttps://maps.google.com/?ie=UTF8&ll=40.004229,-82.866418&spn=0.011818,0.021865&t=m&z=16&vpsrc=6
A67Strange Parclohttps://maps.google.com/?ll=39.446832,-75.064001&spn=0.007755,0.018389&t=m&z=16 found by Steve
A68Parclohttp://goo.gl/maps/ZSKap found by kphoger
http://goo.gl/maps/70Nf5 found by CentralCAroadgeek
A77Strange Parclo
A78Strange Parclohttps://maps.google.com/?ll=39.712287,-74.279251&spn=0.007725,0.018389&t=m&z=16 found by Steve
https://maps.google.com/?ll=40.580063,-74.524534&spn=0.007627,0.018389&t=m&z=16 found by Steve
A88Cloverleafhttps://maps.google.com/?ie=UTF8&ll=40.099035,-83.133717&spn=0.011801,0.021865&t=m&z=16&vpsrc=6

PS–Examples can be found in any rotated orientation; for drive-on-left countries, examples must match a reflected image of the diagram.
Wait, it's all Ohio? Always has been.

kphoger

#1
November 27, 2012, 11:18:20 AM  
Wow, this is fun!  And has the potential to be very time-consuming...

A16:  http://goo.gl/maps/WGH8d
A22:  http://goo.gl/maps/1Ufs1
A44:  http://goo.gl/maps/FygvE
A68:  http://goo.gl/maps/ZSKap
Keep right except to pass.  Yes.  You.
Visit scenic Orleans County, NY!
Male pronouns, please.

Quote from: Philip K. DickIf you can control the meaning of words, you can control the people who must use them.

Ian

#2
November 27, 2012, 04:07:11 PM   Last Edit: November 27, 2012, 09:36:17 PM by PennDOTFan
UMaine graduate, former PennDOT employee, new SoCal resident.
Youtube l Flickr

Kacie Jane

#3
November 27, 2012, 04:13:17 PM  
A11/Twisted diamond: http://goo.gl/maps/XNDSw (surprised that one was left open -- although now PennDot beat me to it while I was babbling about NJ 18)

I notice there aren't any examples given for what you call "Strange parclos".  I'm wondering what the point would be of having a bare loop ramp like that without the corresponding right turn ramp.

(As I was writing that, I realized the southern end of NJ 18 used to have one -- still visible in satellite http://goo.gl/maps/asjI5 -- but that's a special case, and since there were/are missing movements, it's not diagrammed here.)

ETA: And lo! He found some strange parclos as well.  Makes them no less baffling to my eyes though.

pianocello

#4
November 27, 2012, 05:31:40 PM   Last Edit: November 27, 2012, 10:14:56 PM by pianocello
Apologies in advance as Google's link tool won't work on this iPad. Anyway, an example of A05 can be found on exit 48 on I-74 in Galesburg, IL.

Edited to add the link: https://maps.google.com/?ll=40.946519,-90.333152&spn=0.011102,0.019376&t=m&z=16

Also, no A33s? Really? Here's one: https://maps.google.com/?ll=41.596879,-90.460546&spn=0.010992,0.019376&t=m&z=16
Davenport, IA -> Valparaiso, IN -> Ames, IA -> Orlando, FL -> Gainesville, FL -> Evansville, IN

kphoger

#5
November 27, 2012, 08:15:27 PM  
Quote from: PennDOTFan on November 27, 2012, 04:07:11 PM
A17: http://goo.gl/maps/0YdJI

Quote from: vtk on November 26, 2012, 11:50:22 PM

A17Strange Parclo


The interchange you linked to does not match the diagram.  In A17, there are ramps in only 3 quadrants, whereas in your I-95 example there are ramps in all 4 quadrants.
Keep right except to pass.  Yes.  You.
Visit scenic Orleans County, NY!
Male pronouns, please.

Quote from: Philip K. DickIf you can control the meaning of words, you can control the people who must use them.

Kacie Jane

#6
November 27, 2012, 08:26:54 PM  
Quote from: kphoger on November 27, 2012, 08:15:27 PM
The interchange you linked to does not match the diagram.  In A17, there are ramps in only 3 quadrants, whereas in your I-95 example there are ramps in all 4 quadrants.


Perhaps a typo on his part?  Looking closely, I'm pretty sure it's an A27.

CentralCAroadgeek

#7
November 27, 2012, 08:48:52 PM   Last Edit: November 27, 2012, 09:17:10 PM by CentralCAroadgeek

Kacie Jane

#8
November 27, 2012, 09:18:14 PM  
Darn it, I should have had A28.  I-5 @ WA 512 used to be a full cloverleaf, but is now a pretty classic example of that.

Ian

#9
November 27, 2012, 09:35:59 PM  
Quote from: Kacie Jane on November 27, 2012, 08:26:54 PM
Quote from: kphoger on November 27, 2012, 08:15:27 PM
The interchange you linked to does not match the diagram.  In A17, there are ramps in only 3 quadrants, whereas in your I-95 example there are ramps in all 4 quadrants.


Perhaps a typo on his part?  Looking closely, I'm pretty sure it's an A27.

Whoops, it was indeed a typo. Meant to say A27, not A17. It's been edited!
UMaine graduate, former PennDOT employee, new SoCal resident.
Youtube l Flickr

Alps

#10
November 27, 2012, 10:27:28 PM   Last Edit: November 27, 2012, 11:20:36 PM by Steve
A07: https://maps.google.com/?ll=40.27635,-74.825993&spn=0.007662,0.018389&t=m&z=16
A08: https://maps.google.com/?ll=40.327555,-74.64195&spn=0.007656,0.018389&t=m&z=16
A15: https://maps.google.com/?ll=41.093931,-74.155365&spn=0.003784,0.009195&t=m&z=17 (a few streets muddy it slightly)
A18: https://maps.google.com/?ll=39.756593,-75.130348&spn=0.008166,0.018389&t=m&z=16, https://maps.google.com/?ll=40.206246,-74.050684&spn=0.007669,0.018389&t=m&z=16
A27: https://maps.google.com/?ll=40.199576,-74.710615&spn=0.00767,0.018389&t=m&z=16
A28: https://maps.google.com/?ll=40.729389,-74.538031&spn=0.00761,0.018389&t=m&z=16
A34: https://maps.google.com/?ll=41.187213,-74.037359&spn=0.007557,0.018389&t=m&z=16 (went out of state, sorry)
A36: https://maps.google.com/?ll=40.374373,-74.147844&spn=0.00765,0.018389&t=m&z=16, https://maps.google.com/?ll=40.52512,-74.45044&spn=0.007633,0.018389&t=m&z=16, and come to think of it I actually live off of one.
A37: https://maps.google.com/?ll=40.2493,-74.727759&spn=0.007665,0.018389&t=m&z=16
A38: https://maps.google.com/?ll=40.893289,-74.126687&spn=0.003796,0.009195&t=m&z=17
A48: https://maps.google.com/?ll=40.903069,-74.255068&spn=0.00759,0.018389&t=m&z=16
A56: https://maps.google.com/?ll=39.008797,-74.868414&spn=0.007803,0.018389&t=m&z=16
A67: https://maps.google.com/?ll=39.446832,-75.064001&spn=0.007755,0.018389&t=m&z=16
A78: https://maps.google.com/?ll=39.712287,-74.279251&spn=0.007725,0.018389&t=m&z=16 (it's not perfect, but the movements are clear), https://maps.google.com/?ll=40.580063,-74.524534&spn=0.007627,0.018389&t=m&z=16

Note: I recognize there might be some duplicates because vid hasn't updated the list yet, but at least this takes care of NJ examples neatly. OK, I'll put the duplicates in red.

NE2

#11
November 27, 2012, 11:29:20 PM  
pre-1945 Florida route log

I accept and respect your identity as long as it's not dumb shit like "identifying as a vaccinated attack helicopter".

Alps

#12
November 27, 2012, 11:53:58 PM  

NE2

#13
November 28, 2012, 03:40:14 AM  
Oh. I was thinking mirror images were isomorphic.
pre-1945 Florida route log

I accept and respect your identity as long as it's not dumb shit like "identifying as a vaccinated attack helicopter".

jeffandnicole

#14
November 28, 2012, 09:22:28 AM  
Quote from: Steve on November 27, 2012, 10:27:28 PM
A18: https://maps.google.com/?ll=39.756593,-75.130348&spn=0.008166,0.018389&t=m&z=16

I grew up 1.5 miles from this interchange, remembering the way it looked before the highway was built, and the whole construction process.  Rt. 553 - Woodbury Glassboro Rd - remains the thru road.  Rt. 676 - Mantua Blvd - used to cross as an 'X' with 553, but was completely realigned due to the highway.  Mantua Blvd used to continue to the lower right of the linked map, which is now Church St., so named for the church on the street, which is where my wife went to school. Behind the new Lowes there is a very large pit which used to be a signficant dinosour bone find area.

Ah, memories... (My parents still live in the same house, so I'm in the area frequently). 

Dr Frankenstein

#15
November 28, 2012, 02:53:51 PM   Last Edit: November 28, 2012, 11:13:13 PM by Dr Frankenstein
A44: A-10 exits 37 and 68

EDIT: As an explanation, butterfly interchanges are used on toll roads and former toll roads to force all movements through a single toll barrier.

vtk

#16
November 30, 2012, 07:47:55 PM   Last Edit: November 30, 2012, 08:29:47 PM by vtk
Going through the replies to add examples to the first post now...

Quote from: PennDOTFan on November 27, 2012, 04:07:11 PM
A27: http://goo.gl/maps/0YdJI

Mirror image; that's an A56, unless Massachusetts drives on the left.

Quote from: CentralCAroadgeek on November 27, 2012, 08:48:52 PM
A28: http://goo.gl/maps/70Nf5

Mirror image; that's an A68.  Not going to repeat the drive-on-left sarcasm...

Quote from: Steve on November 27, 2012, 10:27:28 PM
A27: https://maps.google.com/?ll=40.199576,-74.710615&spn=0.00767,0.018389&t=m&z=16

Actually, that appears to have some missing movements.  It's not covered by this typology.



I only got as far as Steve's submissions; that's all I have time for at the moment.  By the way, if anyone has any "other names" to add for some of these, I can add them in.  Having most only as "parclo" or "strange parclo" is a bit monotonous.



Quote from: NE2 on November 28, 2012, 03:40:14 AM
Oh. I was thinking mirror images were isomorphic.

You can rotate the diagrams as much as you want.  Reflections are required for drive-on-left locales, but invalid everywhere else.
Wait, it's all Ohio? Always has been.

vtk

#17
December 20, 2012, 02:37:53 PM   Last Edit: December 23, 2012, 12:03:26 AM by vtk
Quote from: Dr Frankenstein on November 28, 2012, 02:53:51 PM
As an explanation, butterfly interchanges are used on toll roads and former toll roads to force all movements through a single toll barrier.

Yes, I believe there was a thread about this regarding some interchanges on Kentucky parkways, and that's where I would have looked first for an A44.  And now that I've found the time to revisit this thread and add your examples, I believe I am caught up. 

Still needed:

  • A05
  • A17
  • A23
  • A24
  • A25
  • A27
  • A33
  • A35
  • A45
  • A46
  • A47
  • A55
  • A57
  • A58
  • A77
Not all of those are strange parclos.  A few are strange half-butterflies (should I add that term to the chart?) and there's one ordinary parclo and one of the twisted diamonds left without examples.
Wait, it's all Ohio? Always has been.

pianocello

#18
December 21, 2012, 08:10:42 AM  
Davenport, IA -> Valparaiso, IN -> Ames, IA -> Orlando, FL -> Gainesville, FL -> Evansville, IN

Brandon

#19
December 21, 2012, 01:05:23 PM  
"If you think this has a happy ending, you haven't been paying attention." - Ramsay Bolton, "Game of Thrones"

"Symbolic of his struggle against reality." - Reg, "Monty Python's Life of Brian"
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