Show us Your Interchanges!

[matias93 7,535]

14 hours ago, chiisakobe said:

I want to use DDRHW4 a lot. This is what a Tokyo highway is. But it is not easy.

Those ramps on the right in the second image are genius! I need to try something like that myself!

[chiisakobe 88]

It's a regular clover but tight and I like it.

[chiisakobe 88]

I tried to make it with as many lamp parts as possible, and I like it.

[JulianMIA 1,476]

10 minutes ago, chiisakobe said:

It's a regular clover but tight and I like it.

Regular works nicely...

[The Battery Mill 41]

7 hours ago, chiisakobe said:

I tried to make it with as many lamp parts as possible, and I like it.

It might be a weaving challenge, but nice concept!

[matias93 7,535]

took inspiration from @chiisakobe compact access ramps inside a roundabout and did this. I still need to see how to accomodate the diagonal road that goes through it, but I'm sure I'll find a way. Maybe a magic roundabout?

[chiisakobe 88]

On 2024/11/25 at 3:21 AM, matias93 said:

took inspiration from @chiisakobe compact access ramps inside a roundabout and did this. I still need to see how to accomodate the diagonal road that goes through it, but I'm sure I'll find a way. Maybe a magic roundabout?

That’s great. It’s similar to what I made, but slightly different. The branch being the main line is really fascinating. I’ve gained inspiration from it as well.

[chiisakobe 88]

This may not be called an interchange, so I apologize in advance. It is access to the main line and the two beltways of the DDRHW-4.

[chiisakobe 88]

The turbine mold was the first one I made. I like it because I was able to make it somewhat tight.

[JulianMIA 1,476]

5 hours ago, chiisakobe said:

The turbine mold was the first one I made. I like it because I was able to make it somewhat tight.

There is always something pleasing when the symmetry is PERFECT...

[Lucario Boricua 7,029]

On 11/17/2024 at 10:48 AM, chiisakobe said:

For the first time, a stacked interchange has been built. However, it feels a bit large.

 

 

My advice for stack interchange sizing includes the following:

• Place the mainline lanes at the bottom (L0) and top (L3), this reduces the overall distance required to 
• Learn the drag patterns of wide A and D ramps, these currently only work for ground level configurations. Place these on embankments, and use the on-slope height transitions
• Make sure to use the network eraser to remove stubs when you attempt to place pieces with zero cell network gaps
• Use the stub-to-stub height transition draggable method for the RealHighway. Unless you're already using the current version of the NAM DLL, you'll need to click one of the end stubs using the Elevated Rail network tool. The really neat thing about this option is you can place network starters within the height transition, allowing you to do very compact height transitions with zero gaps between them and the connecting network pieces

 

 

Hopefully this points you in the right direction!     

 

In the meantime, I somehow manage to take simple interchange designs and make them look complicated and sophisticated. This time I created a cloverleaf interchange in which the crossing freeways change from orthogonal to diagonal. To ensure the ramp connections didn't conflict with the curve of the overpassing freeway, I separated the weaving maneuvers into their separate roadbeds / carriageways:

 

I had to tweak the design meticulously to minimize conflict with a nearby diamond interchange, and also had to evict some of the outer suburbs up to the local roadway:

 

 

Spoiler

I could have continued the diagonal route diagonally, but the alignment beyond this area called for a direct turn north. I'll miss this interchange, it's really nice and smooth!

 

[chiisakobe 88]

13 hours ago, Lucario Boricua said:

My advice for stack interchange sizing includes the following:

• Place the mainline lanes at the bottom (L0) and top (L3), this reduces the overall distance required to 
• Learn the drag patterns of wide A and D ramps, these currently only work for ground level configurations. Place these on embankments, and use the on-slope height transitions
• Make sure to use the network eraser to remove stubs when you attempt to place pieces with zero cell network gaps
• Use the stub-to-stub height transition draggable method for the RealHighway. Unless you're already using the current version of the NAM DLL, you'll need to click one of the end stubs using the Elevated Rail network tool. The really neat thing about this option is you can place network starters within the height transition, allowing you to do very compact height transitions with zero gaps between them and the connecting network pieces

Hopefully this points you in the right direction!     

In the meantime, I somehow manage to take simple interchange designs and make them look complicated and sophisticated. This time I created a cloverleaf interchange in which the crossing freeways change from orthogonal to diagonal. To ensure the ramp connections didn't conflict with the curve of the overpassing freeway, I separated the weaving maneuvers into their separate roadbeds / carriageways:

I had to tweak the design meticulously to minimize conflict with a nearby diamond interchange, and also had to evict some of the outer suburbs up to the local roadway:

  This is what I had before this overhaul: (Reveal hidden contents)

I could have continued the diagonal route diagonally, but the alignment beyond this area called for a direct turn north. I'll miss this interchange, it's really nice and smooth!

 

Thank you for your advice! I truly appreciate it.
I’ve always been puzzled by stubs, and those wide ramps are exactly what I’ve been looking for. I’ve always struggled with how to smoothly narrow a one-tile section. I used to rely on long, gentle curve pieces to narrow down to one tile. I never imagined that smooth, one-tile-wide ramps existed and could be created by dragging. Thanks to your advice, I revisited the NAM manual and finally understood how it works. I hope it will become usable for elevated setups in the future. Thank you so much!

Your cloverleaf is absolutely fantastic—quite complex, I must say. I assume it turned out this way because of the diagonal transition in the middle. Learning how to maintain the mainline while branching further from branches was truly insightful.

[simmering 2,676]

I do not plan this but I often end up with diagonal highways. That makes interchanges really difficult as most diagonal ramps are only available for L0.

[chiisakobe 88]

This is a diagonal access to the loop line of DDRHW4. There's nothing particularly special about it, but I like the smooth feel it has.

[simmering 2,676]

14 hours ago, chiisakobe said:

This is a diagonal access to the loop line of DDRHW4. There's nothing particularly special about it, but I like the smooth feel it has.

This looks indeed very neat. I will try it. Thank you very much!

[chiisakobe 88]

I feel very apologetic because it's so simple, but I like how it combines smoothness and tightness.

[papiouuu 38]

lol after multiple freezes and hours of frustration 

here we are the main downtown connector 

[Haljackey 17,335]

Continuing to rebuild a 2013 era interchange. This time the EB to NB ramp becomes much smoother.

It's featured in the 10th anniversary special of my SC4 video series

 

[EffTheGrid 3,677]

What do you call these? Interchanges? Intersections? Traffic circles? Jersey junk?

Today I'm featuring some curvalinear intersections that sprang up in developing areas.

Here I grappled with connecting the state highway (AVE-6) a grassy medianized boulevard, (which I've represented with 2 FA3 parallel roads) and a residential side road (MAVE-4).

Sometimes it's tough to get two larger capacity roads to intersect and function.

Unintentional lookalike -  Conduit Blvd NYC

These came out great, I think - even if I'm doing everything wrong.

The island provides green space within the void area and a good opportunity for parks, civics, or commercial development. Green space is a plus for res demand. And nice to look at.

I imagine that the NAM team will one day make us easy draggable OWR but until then I'm in no rush - just happy to lay the groundwork.

Here was another head-scratcher, where multiple networks came together in an ugly way:

We now have an orderly and realistic-looking traffic management scheme to build off of and orient the area around, rather than just straight roads.

Look at this example from elsewhere in the city, where two misaligned avenues created one of my favorite hood moments

It's not as pretty as some of the others in terms of functionality but it ties the area up nicely.

Sometimes it's hard to sneak a new highway or major throughfare into an existing grid. Especially one with complicated angles.

Eminent domain is the way to go!

Below, we lost a block of housing, but gained much better connectivity along the waterfront areas, and great civic space for parks and schools. The wider blocks along and near the boulevard also allow for enhanced development, like higher density housing and retail spaces.

All of these intersections provide vital links in a complicated road network - below, the junction serves as the entrance to the Connasequot bypass road, detouring traffic from Broadway and circumventing the city.

Just in this small county, these circular junctions handle numerous important connections along vital state routes and city arteries.

Talk about driving around in circles.

Have anything like this in your cities?

[kschmidt 6,164]

4 hours ago, EffTheGrid said:

What do you call these? Interchanges? Intersections? Traffic circles? Jersey junk?

Today I'm featuring some curvalinear intersections that sprang up in developing areas.

Here I grappled with connecting the state highway (AVE-6) a grassy medianized boulevard, (which I've represented with 2 FA3 parallel roads) and a residential side road (MAVE-4).

Sometimes it's tough to get two larger capacity roads to intersect and function.

Unintentional lookalike -  Conduit Blvd NYC

These came out great, I think - even if I'm doing everything wrong.

The island provides green space within the void area and a good opportunity for parks, civics, or commercial development. Green space is a plus for res demand. And nice to look at.

I imagine that the NAM team will one day make us easy draggable OWR but until then I'm in no rush - just happy to lay the groundwork.

Here was another head-scratcher, where multiple networks came together in an ugly way:

We now have an orderly and realistic-looking traffic management scheme to build off of and orient the area around, rather than just straight roads.

Look at this example from elsewhere in the city, where two misaligned avenues created one of my favorite hood moments

It's not as pretty as some of the others in terms of functionality but it ties the area up nicely.

Sometimes it's hard to sneak a new highway or major throughfare into an existing grid. Especially one with complicated angles.

Eminent domain is the way to go!

Below, we lost a block of housing, but gained much better connectivity along the waterfront areas, and great civic space for parks and schools. The wider blocks along and near the boulevard also allow for enhanced development, like higher density housing and retail spaces.

All of these intersections provide vital links in a complicated road network - below, the junction serves as the entrance to the Connasequot bypass road, detouring traffic from Broadway and circumventing the city.

Just in this small county, these circular junctions handle numerous important connections along vital state routes and city arteries.

Talk about driving around in circles.

Have anything like this in your cities?

Old FAR or dragable in city they are unable with complex intersections ! Tried some Michigan lefts ? That:s  right U turn or go beyond the inter section U or right turn 240 then cross ?

Sincerely yours,

Kschmidt

[EffTheGrid 3,677]

4 hours ago, kschmidt said:

Old FAR or dragable in city they are unable with complex intersections ! Tried some Michigan lefts ? That:s  right U turn or go beyond the inter section U or right turn 240 then cross ?

Sincerely yours,

Kschmidt

Sounds like a project for Simple Jack! 
 

it can be done - with a wide enough right of way so that the roads don’t clip together. 1 game tile is 50’ roughly so a 1.3 or 1.6 tile offset is enough to decouple the networks so that accounts for a 75’ median, roughly. Which is a realistic size, I’d reckon, and almost enough space for that configuration. 
 

play around with far - it’s more docile now than it used to be - just adjoin tricky bits with a stub of road, when connecting one ways and avenues.

the new flex one way right turn slip lanes at diagonal intersections are a life-saver in these instances. As are the drag real-expressway lanes. 
 

try out some interchanges like this - set some things up at angles and connect your region in a new way! 
 

I’ll show you some fun REW setups when I get home tomorrow. 

[EffTheGrid 3,677]

Love it or hate it?

FA3 boulevard interchange with diagonal parkway - local lanes exit while express runs straight through

[Haljackey 17,335]

Couple new interchanges from me this weekend.

The interchange to the east was upgraded to free flowing which blocked access, so I needed a new one for local traffic. This was the setup before

-----

And a interesting diamond interchange

  Edited January 19, 2025 by CaptCity  
Image added for display.

[EffTheGrid 3,677]

Is there a separate area for surface intersections? Is this allowed here?

These are two roads in the foothills. The area is turning suburban and being heavily developed so these roads need an upgrade.

I didn't want to radically alter the existing networks because they both carry significant traffic to other neighborhoods nearby, and I like the way they traverse the topography.

So the I just used a simple piece of avenue to transform the intersection. Now it's a much better route for everyone.

Wasn't planning this - but I'm jazzed with the way it came out!

 

[simmering 2,676]

I could just about squeeze it in:

[Lucario Boricua 7,029]

On 1/22/2025 at 12:06 PM, EffTheGrid said:

Is there a separate area for surface intersections? Is this allowed here?

I believe you're looking for this thread:

 

It's been a while since anyone's posted, but your post would be excellent to bring attention to non-interchange crossings!

 

Meanwhile, in the city of Baramaya...

 

I don't think I've re-designed an interchange so many times! This interchange has been either a directional T or a trumpet, with 5 iterations to date:

 

Iteration #1: trumpet interchange at the edge of the farms

 

Iteration #2: directional T interchange at the edge of the farms

 

Iteration #3:bendy directional T interchange at the edge of the farms

 

Iteration #4: directional T interchange at the edge of suburban expansion and at odds with railway

 

Iteration #5: trumpet interchange at the edge of suburban expansion and coexisting with a railway

  Edited January 26, 2025 by CaptCity  
Image added for display.

[Haljackey 17,335]

3 partial interchanges = 1 big full interchange

 

[CityNut607 622]

Dusting off my SC4 interchange building hands. 

-CityNut607

[Haljackey 17,335]

Major interchange modification and expansion in the hills. This was an intense build to get the slopes right.

Initial idea

Reality

Expanded junction

New interchange

Up the road

On the new route

Well utilized.

 

[OBthe2nd 15]

So I destroyed a city and decided to rebuild it to 1) use less memory, 2) Have GLR lines constructed with termini like real public transport systems, 3) make the cross-region RHWs more effective at cross-town travel, and 4) have it be less of a concrete jungle.

Here's a unique T-Junction I made while evaluating if I want this particular RHW to be a crosstown RHW, OWR Expressway, or not at all.