DEATH-care

[Glitcher]

Im just saying, why build 2?? Both overpasses are doing same job

That's the thing. Both overpasses are not doing the same job, they're connected to different blocks. Freight traffic can really build up on overpasses in a busy area. Take a look at the screenshot below.

I used to only have two overpasses here, one on the left and one on the right. But the ramps on both sides got pretty deep in the red because a lot of trucks were routing to the factories and shops above. So I added a third overpass in the middle and that eased traffic a lot. Like I said, there's no disadvantage to this method and it's not as untidy as you believe. I always leave space along the highway for ramps, tracks and bike paths. It's a very efficient system.

PS. The airport cargo station in this pic still isn't working properly. Have you experienced the same problem Ragga? I really hope the devs patch the roadside platform.

 

[Ragga Muffin]

That's the thing. Both overpasses are not doing the same job, they're connected to different blocks. Freight traffic can really build up on overpasses in a busy area. Take a look at the screenshot below.

View attachment 815396

I used to only have two overpasses here, one on the left and one on the right. But the ramps on both sides got pretty deep in the red because a lot of trucks were routing to the factories and shops above. So I added a third overpass in the middle and that eased traffic a lot. Like I said, there's no disadvantage to this method and it's not as untidy as you believe. I always leave space along the highway for ramps, tracks and bike paths. It's a very efficient system.

PS. The airport cargo station in this pic still isn't working properly. Have you experienced the same problem Ragga? I really hope the devs patch the roadside platform.

RE dlc yard; i didnt notice tbh, i have seen your posts about it. I wouldnt notice cause ive got 4 rail connections and 8x frieght yards, ive still used it tho, il keep it [new yard with big cranes] in view when i detail my airport
Frozen falls makes a sh1t test city, very over supplied, i could turn off half the services and still be laughing, so when 1 stops working i just dont notice

Its the freight yard trolling the other interchange btw and some of your ramps are short / steep
Thats was my assumption, you make a path "highway" - very nice
2x2lane over passes in same section of HW within walking distance of each other are doing the same thing,
Use 1 4 lane, between where the singles are, split the end of 4 lanes 60°/ or islands or use the 4ln as "the new trunk"
Or use one of eggs the 3rd one is boss. Its huge but it will stop you needing three

These are my interchanges, im about to get negged for posting vid but considering both vids up are specialist for somone here that person can stuff off (they didnt even watch vid). If you dont like it dont click it

 

[grumpy-smurf]

Yeah, that T-bone interchange is problem. Check for a stop sign/intersection being set on the on-ramps. What size highways are you using? If they arn't already max size, upgrading at least a portion may help, since while you can't set proper turning a merging lanes, they can something figure it out using larger size roads. Relatedly, it's probably non-optimal and a hanging offense, upgrading the end of that congested ramp to a two-lane highway might help get more cars moving.

Whenever I used e.g. a 2 lane avenue merging with a smaller road, it created a bottleneck and it doesn't help.

I have a 10 lanes motorway, which I am not sure if I want to use yet, unless I widen the T-interchange with the ! tool.

I might use it at some point, but not yet.

 

[Glitcher]

Whenever I used e.g. a 2 lane avenue merging with a smaller road, it created a bottleneck and it doesn't help.

I have a 10 lanes motorway, which I am not sure if I want to use yet, unless I widen the T-interchange with the ! tool.

I might use it at some point, but not yet.

Ten lanes is a gross extravagance. I haven't even used the four-lane highway because traffic doesn't build up enough in any part of my city to warrant it. Did you get your traffic flow above 80%? I can still fix it for you if you share your save file.

 

[Ragga Muffin]

Whenever I used e.g. a 2 lane avenue merging with a smaller road, it created a bottleneck and it doesn't help.

I have a 10 lanes motorway, which I am not sure if I want to use yet, unless I widen the T-interchange with the ! tool.

I might use it at some point, but not yet.

Well i either pull a 1way off(and on) either direction at about 60° triangle the then make a half 1 way system
Its basically a part roundabout
Or i use a round about, and i generally still split ends of large roads to keep traffic speed off and on (cause shallow bend)
Some roundabouts i use roads, some i use HWs (2 or 3 never 4 lane)

Id never use 10 lanes, if you need 10 your doing it wrong and it wont help you anyway (cause you doing some thing wrong)

Go custom city, all unlocks. Learn how to modify vanilla interchanges to give them more life expectancy, lengthen the ramps / loops
learn how to make one, or just go download a turbine/stack.
Some will need traffic manager to work right

Does any body have a vid of a 5 way turbine build (vanilla)???
dont worry too much, im pretty sure il figure it

 

[Ragga Muffin]

These are not going to just "solve" all your issues
If your clover is clogged it will pretty much solve that

One of the creations ive seen that took more than average effort, i was impressed

How to build a stack

 

[Glitcher]

How to build a stack

I'm not a fan of oversized interchanges. It usually means having to space your overpasses further away, limiting highway accessibility. I tried building overpasses near a large turbine interchange, but it resulted in freight trucks getting off at one overpass and cutting through town to get back on the highway at another overpass because the ramps at the interchange were simply too long. I ended up rebuilding the whole interchange much smaller with shorter ramps so vehicles spend more time on the highway.

 

[Ragga Muffin]

I'm not a fan of oversized interchanges. It usually means having to space your overpasses further away, limiting highway accessibility. I tried building overpasses near a large turbine interchange, but it resulted in freight trucks getting off at one overpass and cutting through town to get back on the highway at another overpass because the ramps at the interchange were simply too long. I ended up rebuilding the whole interchange much smaller with shorter ramps so vehicles spend more time on the highway.

yeah i touch on that in 7.1 when i speak of my plans to move/replace that service interchange
You basically need service interchanges X4, with a ring road for the 1/4 circles, something for the trunks to grab, maybe make it a skytrack?
I build the actual stack early so the space is reserved, particulay in my city where im doing silly things with terrain and then building a night club, marina tram interchange under the stack. I just have to build stack first
Use a slower road for the ring and things will not use it as a cut through, i think indy roads are 40mph?? Or DONT put service interchange so close to stack???

Decentalise indy, little patch near each big patch of commerse.
In UK Much of our old indy zones are now knocked/abandoned and the land was given over to super markets, meaning whats left is near commerse
Use many freight yards, it zeros your indy traffic
City wide back web of paths, (for OP)

 

[jcitron]

My recommendation is to look at real maps and real aerial views of cities and highway interchanges. When I designed my cities, I base the road networks on those that I've driven and rode on all my life. I find that most of the time these intersection layouts work well and will get you through most situations just as they do in real life most of the time. With that said, I wonder sometimes if the city street and highway planners ever tried the roads and intersections they designed after the geniuses redesigned and "fixed" things that worked perfectly fine in the pass because the roads they designed are pretty lousy and outright dangerous.

The process isn't 100% guaranteed to work but what it will do is give you an idea on what you might want to try.

 

[MarkJohnson]

With that said, I wonder sometimes if the city street and highway planners ever tried the roads and intersections they designed after the geniuses redesigned and "fixed" things that worked perfectly fine in the pass because the roads they designed are pretty lousy and outright dangerous.

I don't think they do. At least not back in the 70s when they first designed the 4-leaf clover interchange. It was horrendously slow and huge. I noticed when we were in California that summer, we had to go through a 4-leaf clover and it was jammed all of the time. I noticed the on ramp was ahead of the off-ramp, so traffic collided at the intersection of these two ramps all of the time. There were several wrecks everyday that we had to finally just avoid it completely. lol

That was the biggest thing about that summer vacation. It's weird how you can remember the dumbest things from your childhood. lol

With that said, I have no problem using them min this game at all. The game just can't create that much traffic that much in one spot, unless you go out of your way and try to do it. Or the AI kicks in the artificial jamming routine.

 

[grumpy-smurf]

I used to only have two overpasses here, one on the left and one on the right. But the ramps on both sides got pretty deep in the red because a lot of trucks were routing to the factories and shops above. So I added a third overpass in the middle and that eased traffic a lot. Like I said, there's no disadvantage to this method and it's not as untidy as you believe. I always leave space along the highway for ramps, tracks and bike paths. It's a very efficient system.

I am creating overpasses and readjust all the STOP signs/Traffic lights.
It seemed that either by default there were 2 STOP signs at the motorway T-Section (before 1, 2 & 3.jpg) both at the exit and on the motorway, or I had put them by mistake and they were causing havoc and mayhem (especially that it was the main side for exit for lot of industrial vehicles).
The initial design for overpasses didn't seem to work well (before 1 & 2.jpg), so I redesigned them and my traffic picked up by 4% (now 2.jpg).
In before 4.jpg I kept the obvious signalling/trafic lights for a real lifr scenario, but it was very inefficient for the game, so I made the necessary ammendments (now 1.jpg).
In now 2.jpg you can see the roundabout/overpass have a really good flow and the T-Section exit getting relieved after I took all the STOP signs off. My next mission is to check what is wrong past it (red U-turn).

 

[grumpy-smurf]

My first attempt for an overpass/roundabout, where I can use the space under it too.
I started simple, with in and out feed from the motorway and 2 points of entry/exit for both sides of the motorway.

I built it by combining 2 small elevated (x1) roundabouts, I deleted half of the round and all the exits. Then, I converted them to either avenues or 6 lane one-way roads, so this way I increase capacity but keep the diameter small.

Last step is to join the two halves and create entires and exits.

 

[MarkJohnson]

Nicely done. Things are look up for you.

Glad to see you're figuring things out on your own. I'm sure you'll find it a bit more rewarding than starting over.

Keep us updated.

 

[grumpy-smurf]

Nicely done. Things are look up for you.

Glad to see you're figuring things out on your own. I'm sure you'll find it a bit more rewarding than starting over.

Keep us updated.

I even made a 2 directions roundabout by accident and it works perfectly fine
Instead of converting the narrow ring into an one-way avenue, I set it to 2 ways but the flow is awesome!

 

[jcitron]

I don't think they do. At least not back in the 70s when they first designed the 4-leaf clover interchange. It was horrendously slow and huge. I noticed when we were in California that summer, we had to go through a 4-leaf clover and it was jammed all of the time. I noticed the on ramp was ahead of the off-ramp, so traffic collided at the intersection of these two ramps all of the time. There were several wrecks everyday that we had to finally just avoid it completely. lol

That was the biggest thing about that summer vacation. It's weird how you can remember the dumbest things from your childhood. lol

With that said, I have no problem using them min this game at all. The game just can't create that much traffic that much in one spot, unless you go out of your way and try to do it. Or the AI kicks in the artificial jamming routine.

We have plenty of those where I live with just as many accidents to go with them. As a kid we took trips to NYC and Long Island to visit dad's relatives. The New England Thruway, which is now I-95, was absolutely insane with on and off ramps, clover-leaf intersections and other crazy left-exit lanes. For me the highlight was driving next to the New Haven Railroad's electric mainline between New Haven and NYC.

What I do remember about MA Rt. 128, now also part of I-95 but still called Rt. 128 by us locals, was the skid marks all over the place just before the off ramps. Rt. 128 was widened to an 8-lane highway in the early 1960s and there would be skids going from the far inside lane across to the exits as well as big skids that ended abruptly next to retaining walls and in the road. My brother and I used to count them and tally how many we found on our trips.

Famous US 1 was just as bad. That road has shopping plazas and restaurants located on both sides of the 2 to 3-lane highway. There was no such thing as an off ramp as we know it and there were stop signs for entering the highway with curves so tight that it was worse than we create sometimes in Cities. There were, and in some cases still are, traffic lights and roundabouts. People would be traveling at 65 mph or faster - remember this was the 60s and come to a stop suddenly for a traffic light. To get to the various businesses located on each side of the road, people had to make turns from the left lane to cross over. Parts of this have been fixed and for the most part US 1 in parts has become a secondary road once I-95 was completed.

I still wonder if designers try their intersections though. In the greater Boston area for instance, they have been "fixing" places that worked perfectly fine for decades. A couple of years ago, they did something along the famous Storrow Drive where people needing to head north and east had to somehow cross 4-lanes of traffic heading in another direction. The geniuses had removed a perfectly working Leverett Circle roundabout where the MGH elevated station is located. To add insult to injury, one road direction was changed and what was once a two-way road became a one-way without telling anyone until they found out during rush hour.

There are a few places I'm aware of that have been "fixed, but I think the worst one is the Drum Hill Rotary in Chelmsford. For decades that was a simple 2-lane roundabout not much different than the ones that Biffa makes. People got on went around and found their exits. Simple and it worked. Then about 15 years ago, they fixed that one too. Now it works with multiple lanes that peel off but there's no indication which lane you're supposed to be in until you're on top of it then end up in wrong lane. Given the amount of broken glass on the roadway, we can imagine how many fender benders and frayed nerves have been there. When I first encountered the new rebuild, I got stuck in the wrong lane myself. I had only driven the previous version for well over a decade before without problems. After that encounter, I found other ways to get home. The trip was a bit longer, but more sane and less stressful.

 

[Ragga Muffin]

I even made a 2 directions roundabout by accident and it works perfectly fine
Instead of converting the narrow ring into an one-way avenue, I set it to 2 ways but the flow is awesome!

I dont like the idea of highway traffic not going through (under) the island
The over pass is meant to pass over HW

The route through (the 4 lane) at the north, flatten whole zone and rebuild zone, join that 4 lane better, id use 2x1way.
Or You could just pull on ramps from philips bulvard and avoid the need for the 4 ln join entirely

I actually like the t -bone under the pass, but to get HW going through it needs to be 1 lvl lower
Then on ramp the south 4ln exit

2 directions can work, but when it stops it grids to halt
Have fun

 

[grumpy-smurf]

I dont like the idea of highway traffic not going through (under) the island
The over pass is meant to pass over HW

I guess you are talking about this one (attached)?
I thought that too, but I wanted to try it.
Initially, it seemed to flow better than before, but right now, it is getting more and more jammed (elevated elongated roundabout 3.jpg) and I will need to remove the direct connection of the HW to the roundabout.
Then, after I see how the new connections will work, I will decide how to change the surroundings accordingly.

 

[Rainer Prem]

I guess you are talking about this one (attached)?
I thought that too, but I wanted to try it.
Initially, it seemed to flow better than before, but right now, it is getting more and more jammed (elevated elongated roundabout 3.jpg) and I will need to remove the direct connection of the HW to the roundabout.
Then, after I see how the new connections will work, I will decide how to change the surroundings accordingly.

Hi,

if too many cars in a roundabout have the same entry and exit, they can clog the whole structure. In your case, a one-lane slipline outside the roundabout can take the pressure off.

cu
Rainer

 

[Glitcher]

Hi,

if too many cars in a roundabout have the same entry and exit, they can clog the whole structure. In your case, a one-lane slipline outside the roundabout can take the pressure off.

cu
Rainer

No, it won't. Vehicles always get into the turning lane well before the turn, so roundabouts are typically filled on the outside lane. Grumpy, your whole roundabout shtick is fundamentally flawed. You used six-lane one-way roads for the roundabout, but you'll never have vehicles fill all six lanes. Using bigger roads to alleviate traffic is exactly what I told you not to do. Second, the roundabout only connects the highway and two intersections on the top and bottom of the pic. This just makes it a glorified overpass, which you've overbuilt to the point of ignoring other areas. Where are the other highway access points? I only see vehicles able to enter and exit from this roundabout, nowhere else along the highway. How many times do I have to say it? Build more overpasses! You can bulldoze this inefficient roundabout and replace it with the simple bridges I showed you earlier. You need to get drastic with your road improvements, because whatever you're doing isn't working. 60% traffic flow is still crap.

 

[grumpy-smurf]

No, it won't. Vehicles always get into the turning lane well before the turn, so roundabouts are typically filled on the outside lane. Grumpy, your whole roundabout shtick is fundamentally flawed. You used six-lane one-way roads for the roundabout, but you'll never have vehicles fill all six lanes. Using bigger roads to alleviate traffic is exactly what I told you not to do. Second, the roundabout only connects the highway and two intersections on the top and bottom of the pic. This just makes it a glorified overpass, which you've overbuilt to the point of ignoring other areas. Where are the other highway access points? I only see vehicles able to enter and exit from this roundabout, nowhere else along the highway. How many times do I have to say it? Build more overpasses! You can bulldoze this inefficient roundabout and replace it with the simple bridges I showed you earlier. You need to get drastic with your road improvements, because whatever you're doing isn't working. 60% traffic flow is still crap.

I have built more overpasses, why did you assume that I haven't?
I use wider roads compare to the single lane ones, becuse I think that they flow more. I actually managed to raise my traffic flow to 62%, whicis not great but I'm getting there.
I'll repost new photos of the reviewed glorified overpass soon.