Cities: Skylines (Steam) - Issue with my city after everything working perfectly fine up to 60k inhabitants (30h-40h play time on save)

[Seberet]

Describe your issue
Issue with my city after everything working perfectly fine up to 60k inhabitants (30h-40h play time on save)

What is your game version?
1.16.1-f2

What expansions do you have installed?
After Dark, Snowfall, Natural Disasters, Mass Transit, Green Cities, Parklife, Industries, Campus, Sunset Harbor

What mods are you using?
BigCity (25 tiles mod) --> issue still persists after disabling.

Please explain your issue is in as much detail as possible.
I am on the Garden Rivers map and after having expanded a tile in my world, the upper one with a lot of ore inside (did not start building to it yet), my industries suddenly had no more buyers (I have not added or removed any industry areas for around 10h). I have included a screenshot of the upgraded tile (the one with a lot of ore). At the same time, my commercial zones started to not have enough goods to sell. Also, at the same time, garbage and deceased started not to get picked up. Every trash facility only sends out one truck at a time.
Before the issue, I had no traffic problems, and after the issue started, I realized that all my roads were completely green and little to no cars/trucks were driving on the road anymore (see attached).
I checked all roads, and I do not seem to have any one-way roads leading the wrong way. All my cargo hubs and highways are accessible, and everything worked (exports and imports) until the tile expansion. I have also realized that suddenly my trains are carrying far less cargo and far fewer cargo boats are leaving the hub. This might have of course been a coincidence, but I have not edited much other than adding more commercial zones and residential zones.
I have tried a lot of things, including removing all industry areas and only building a few back up, but they almost instantly went to not enough buyers again. Garbage piling up is also not getting fixed over time.
I have attached a saved file of my city. This save file is before the chaos fully started, but I had already removed some industries.
Thank you for anyones time and help!

Can you replicate the issue? If yes, please explain how you did it.
I have no idea.. but I expanded the tile that I got from the Metropolis milestone and all the issues started happening. This might be a coincidence, but I wouldn't know what else happened.

Attachments File(s) attached

 

[ASGeek2012]

A few things to check:

1) Check not only the roads in your city but the ones leading to the highways. Check that you didn't accidentally delete an outgoing connection. Having no outgoing connection will prevent industry from exporting excess products. Having no incoming connection means commercial cannot import to make up the shortfall.

2) If your highways are good, check the outside connections button on the menu. Check your current exports. If the current exports is above 10,000, you may be hitting the export cap. If so, replacing some industry with offices will cut down on exports.

3) Pick a few service buildings scattered throughout the city (including in your industry areas) and click on them while the game is NOT paused. Check the vehicles in use. If you see any constantly flicker between 0 and 1, you have a broken road path somewhere.

 

[Seberet]

A few things to check:

1) Check not only the roads in your city but the ones leading to the highways. Check that you didn't accidentally delete an outgoing connection. Having no outgoing connection will prevent industry from exporting excess products. Having no incoming connection means commercial cannot import to make up the shortfall.

2) If your highways are good, check the outside connections button on the menu. Check your current exports. If the current exports is above 10,000, you may be hitting the export cap. If so, replacing some industry with offices will cut down on exports.

3) Pick a few service buildings scattered throughout the city (including in your industry areas) and click on them while the game is NOT paused. Check the vehicles in use. If you see any constantly flicker between 0 and 1, you have a broken road path somewhere.

Thank you for your response!

1) I already checked about missing roads/pathways before, but I could not find anything. I checked again and could not find anything. After analyzing cars, I also saw that cars can drive everywhere correctly. I also used a mod just now to check whether any pathways were broken. Could not find anything.

2) I just now checked the outside connections, and I am on 1600 exports. I also checked the stats in the pause menu, and I did indeed reach 10k exports at some point (year: 2040) but the issue started to occur when I was around 4.5k-5k exports (year: 2049).

3) Like I mentioned, I just used a mod to check whether any pathways were broken and could not find anything. When I look at a waste transfer facility, I see that only 1 truck is in use. I see no flickering and it does sometimes jump up to 2, but never more. My budget is at 100% for almost everything and even reducing the amount of buildings/facilities does not help increase the number of trucks in use. I also see the trucks on the road and they are indeed picking up trash. But since there are only 1 per building, its not quick enough.

Is there anything else I could check? I also just remembered that I did add bus lines in a specific area, could that have caused something? i tried deleting the lines but so far nothing changed.

Thank you for your time!

 

[MarkJohnson]

Your city is just way too out of balance and collapsing on itself. You have too many dead end districts with only one or two ways in and out.

Everything is on a timer and it is just too time consuming to make these trips for the cims before they time out.

Make sure each district can get to the neighbor district easily. make over-passes across the highways.

You need practice placing those waste facilities. I normally don't bother with them. I just use incinerators. But be careful with them, they make ground pollution and ground pollution is fatal to residential areas, so stay a few blocks away from residential areas with any pollution (noise, water, or ground)

EDIT:

I just had another look, and you have maxed out your vehicle limits. 16383 vehicles. You need to organize (logistics) your districts so they have purpose. Freight needs to go to specific buildings, tourists need specific building, shoppers, visitors, etc.

I like making a commercial district next to generic industry so the freight can stay in a more central area. Then I fland residential on each side to provide workers.

 

[Seberet]

Your city is just way too out of balance and collapsing on itself. You have too many dead end districts with only one or two ways in and out.

Everything is on a timer and it is just too time consuming to make these trips for the cims before they time out.

Make sure each district can get to the neighbor district easily. make over-passes across the highways.

You need practice placing those waste facilities. I normally don't bother with them. I just use incinerators. But be careful with them, they make ground pollution and ground pollution is fatal to residential areas, so stay a few blocks away from residential areas with any pollution (noise, water, or ground)

EDIT:

I just had another look, and you have maxed out your vehicle limits. 16383 vehicles. You need to organize (logistics) your districts so they have purpose. Freight needs to go to specific buildings, tourists need specific building, shoppers, visitors, etc.

I like making a commercial district next to generic industry so the freight can stay in a more central area. Then I fland residential on each side to provide workers.

Thank you MarkJohnson for your response!

Regarding the first part of your message. I understand that I do indeed have only 2-3 exists for each district, but it has worked for me this entire time (even the distances between industries/offices and residential). The distances have not really changed, especially since my residential area in the north is one furthest away from everything and it was the first one I built (and no issue with it since the beginning). I even reduced traffic after some time as I started to apply lane mathematics, resulting in less traffic. So I am a bit confused as to why the cims used to travel the distances, and suddenly don't anymore.

Regarding your Edit, this is something I did not now know existed (vehicle cap). Could you tell me where I can see this stat so that in the future, I can keep an eye on it?
I have indeed started to build a bit more residentials around my commercial zones, but I will now also have a look at how to include my industries closer to everything.
Adding on to the vehicle limit, how come almost no more trucks are driving now? I would believe that if it reaches the cap, it would stay at the cap and any additional vehicles will get denied, resulting in only a specific amount of industries/services having trouble and not all at once. Or is it that all deployment demands are denied because of all asking at the same time? It is 100% certain that I have fewer vehicles right now on the road, but no resolution to the issue. I hope my question makes sense.

I also assume buses count towards the vehicle limit. In a previous message, I mentioned that the two things I had done before the issue started were the expansion of the tile and the addition of several bus lines. So I am assuming the busses are the ones that triggered the vehicle limit.
Do you think that removing the bus lines could be an option to reduce the number of vehicles enough to give me time to adjust the few things you mentioned?

Thank you for your help!

 

[MarkJohnson]

I even reduced traffic after some time as I started to apply lane mathematics, resulting in less traffic. So I am a bit confused as to why the cims used to travel the distances, and suddenly don't anymore.

A big part of that is when you build your district, you move on to the next district and the previous district is still growing. Each building can double in households demands as it reaches its maximum level. So, your traffic can double as well, slowly over time. Plus it adds more demands to your services, so you need to add more services, so they can collect garbage, dead, freight, tourist, etc.

Regarding your Edit, this is something I did not now know existed (vehicle cap). Could you tell me where I can see this stat so that in the future, I can keep an eye on it?

I temporarily use the Watch It! mod when needed. It has an added feature to show your city's individual happiness stats, so you know your city is healthy so it can level up your building quicker.

I have indeed started to build a bit more residentials around my commercial zones, but I will now also have a look at how to include my industries closer to everything.

Residential is probably the least important of them all. You should be focusing on the business side of thing, like freight, shoppers, and tourists.

Adding on to the vehicle limit, how come almost no more trucks are driving now? I would believe that if it reaches the cap, it would stay at the cap and any additional vehicles will get denied, resulting in only a specific amount of industries/services having trouble and not all at once.

You can shorten vehicle times by having them close to their destination. Like I said before, have generic industry near commerce areas, so they can get freight quickly to where it needs to go.

Traffic itself can delay traffic by getting in jams. Island districts can make traveling long, as they need to circle around and zig zag across the city, instead of crossing over the highway and go directly there.

I went through all of your districts and have a N, S, E, and W entrances into each of your districts, I then clicked on TMPE and reset traffic, and it cleared up immediately and had less than 8,000 vehicles on the road.

So I am assuming the busses are the ones that triggered the vehicle limit.

Buses are vehicles too, but buses can carry like 50+ passengers, so it is actually removing up to 50+ vehicles from the road.

 

[Seberet]

A big part of that is when you build your district, you move on to the next district and the previous district is still growing. Each building can double in households demands as it reaches its maximum level. So, your traffic can double as well, slowly over time. Plus it adds more demands to your services, so you need to add more services, so they can collect garbage, dead, freight, tourist, etc.



I temporarily use the Watch It! mod when needed. It has an added feature to show your city's individual happiness stats, so you know your city is healthy so it can level up your building quicker.



Residential is probably the least important of them all. You should be focusing on the business side of thing, like freight, shoppers, and tourists.



You can shorten vehicle times by having them close to their destination. Like I said before, have generic industry near commerce areas, so they can get freight quickly to where it needs to go.

Traffic itself can delay traffic by getting in jams. Island districts can make traveling long, as they need to circle around and zig zag across the city, instead of crossing over the highway and go directly there.

I went through all of your districts and have a N, S, E, and W entrances into each of your districts, I then clicked on TMPE and reset traffic, and it cleared up immediately and had less than 8,000 vehicles on the road.



Buses are vehicles too, but buses can carry like 50+ passengers, so it is actually removing up to 50+ vehicles from the road.

Thank you for your help! I will see what I can do and let's hope it'll fix some of the issues!

 

[MarkJohnson]

Thank you for your help! I will see what I can do and let's hope it'll fix some of the issues!

I'm sure you'll have no issues. Well, for now anyway. LOL

Another thing I do is to make sure over half my district have reach their full level, before moving on to the next district, so they don't affect the traffic as much.