78

The cause of the problem is that when you zone a whole residential district all at once, many adults move in at roughly the same time, then they become seniors (and eventually die), at the same time. There are a few solutions available to you; 1) Build Slower The first solution involves preventing the population spikes that result in the mass die-offs. ...


41

After some testing myself, I discovered this message means your industries are lacking one or more of your basic services such as fire protection, police, mass transit, etc. Placing offices near polluting industries can cause the "Too few services" message because of low land value. What the message actually is saying is: there is something undesirable about ...


37

The simplest, easiest and most compact way to connect the starting highway to a smaller main road is to just use a pair of one-way roads - one set from the incoming highway to the end of the main road, and one from the end of the main road to the outgoing highway. This isn't necessarily the best junction, but it avoids traffic lights and allows ...


32

I tested three tools to try and mitigate the impact of a tsunami: Flood Walls Canals Pumps In summary, canals were by far the most effective, although all three tools had marginal impact on their own. Multiple layers were more effective than a single layer - e.g. the difference between 0 and 1 canals was small, but the difference between 1 and 2 was ...


31

It's hard to verify it because it isn't zoomed in but I'm 99% sure it's because your road is facing in one direction at one point and in the other direction in another. Look at the arrows on the road, you'll notice that they're pointing towards eachother and essentially creating an impossible driving route.


29

As Dennis noted, service is a huge part of this - all the services in the game only work if transportation is available (of course, power uses power lines, water uses water pipes, so they aren't affected by road traffic). This gets worse as the city grows bigger - it's very easy to have all your service trucks stuck in one traffic jam. Note that the service ...


27

In the case of upgrading the size of the road, you can use the "!" button next to your road shape tools (straight, curved, etc). Unfortunately, this only works on size, at least for now. Due to the fact that you can only decide the direction of a one way road by dragging it, you still have to delete and rebuild a road you want to change to one way. You can ...


26

I haven't found any (official) evidence to prove my hypothesis following now, so be aware that it might be wrong. You say that you have no industrial zones at all. So, let's check this chart first: You see that there's a production chain which requires specialized and generic industry to create goods for your commercial buildings. If you had that, you ...


25

If there is a need for the zone type, yes, abandoned buildings will eventually sort themselves out. If, for example, a high-density residential building becomes abandoned, the lot is free for new high-density residential development. However buildings that replace an abandoned one will start fresh at base level and need to work its way back up over time. ...


23

There could be issues such as garbage trucks not being very efficient. Likewise any service that uses the roads will have difficulties. Fire trucks, police cars etc. With that information in mind I am sure you can make the decision whether it is worth it to you, to remedy the situation or not. Edit: Additionally it creates some noise pollution, which will ...


21

There is no (official) evidence yet that ground pollution can be removed. However, some users reported that pollution might disappear after a while. Still, other sources report that removing ground pollution isn't possible. You can remove any water pollution by placing water recycling plants which are unlocked at a population of 16.000. It will take some ...


20

I was at first a bit confused as to the button "empty building to another facility" thinking that would just move it to another landfill. In order to move the trash from the landfill to incinerators you must click "Empty building to another facility" on your landfill: After you set it to emptying mode garbage trucks will start transferring it to ...


20

I think you are under the assumption that Highly Educated Workers cannot work the Uneducated jobs. They indeed will eventually fill whatever jobs are available. At first they may not want to go work there, and the dirty industries may complain when they first go into business that there are no workers, but the Highly Educated will eventually go work there. ...


19

To reverse the direction of a one-way road, use the road upgrade tool and Right Click the section of road that you want to reverse. This will work even if it gives you the "cannot upgrade roads of this type" error when you hover over it. Be sure to select the right kind of one-way road first!


16

If you use any multi-lane one-way road as an exit to a highway, you effectively reduces the highway to two lanes at that point. This is because the lane on that side of the highway typically becomes turn-only, while the middle lane will become turn/straight. Unsurprisingly, this can be bad for traffic flow on the highway. Note that this also applies for ...


14

You need to have enough water being pumped, as well as sewage. Note the consumption is less than capacity in both water and sewage, seen here: You also need to make sure your pipes are connected to the buildings, denoted by a darker blue coloring in the water view, seen here: If either of these are not true, you will see the No Water notification pop up on ...


14

Using a roundabout is a solution. Not the best one, but it works quite well when the traffic increases:


14

This worked perfectly for me! You can start out with smaller roads that connect the highway with industrial and residential areas and as the game progress and you earn more money you can bulldoze them and put the broader ones instead. I managed to afford this layout from the beginning, but I don't recommend it because it was tough! Just don't forget to put ...


14

Pedestrians will use walkways instead of other methods. Presumable this depends on if the route is more convenient in some way and other factors, but built correctly they do help. For example, I've successfully connected the back of a dead-end residential area to the back of an adjacent industrial area and plenty of pedestrians would walk between the two ...


14

I think you've got it right, it really is that simple. A single bus depot is sufficient to supply enough buses to a city of any size1, and its position isn't really important as long as it is connected by road to any bus routes you create (if your city isn't entirely road-connected you'll need a depot in each area you want bus routes in).  The only ...


14

The general plan with the use of larger vs. smaller roads, mimicking real life road planning, is to create a "hierarchy" of roads. See this guide for general ideas on planning road networks. With this in mind, the larger four and six lane roads serve as the "trunks" to two lane road "branches". These larger roads handle a higher volume of traffic at higher ...


13

Unfortunately, the only way to currently plant trees in the game is one-by-one. There is a Tree Brush which will allow you to place multiple trees at a time, but it looks like the mod hasn't been updated since the latest patch (which broke a lot of mods), so it's not currently working. Since it's a mod, it will disable achievements. There is a mod to ...


13

Based upon information from online threads and in-game experience it appears that citizens will die at specified intervals based upon when the residential zone was created. There appears to be a few ways to combat this: Make sure not to zone in large bursts. Meaning that you should zone a few sections of residential as time goes on and not in one large ...


13

Finally I found the cause of the problem: There was a leftover stop in the demolished area. Somehow this stop was stuck in the middle of the forest, with no roads around, and couldn't be interacted with. I think it must be a bug in the game. I built a road close to it (but not on it) then dragged the line to go on that road. After this I was able to ...


11

You could try a frontage road running parallel to your large one way This allows for numerous entry and exit points to the highway without making a zillion intersections on your main avenue. The frontage road also "filters" the traffic to closer to where they actually want to go instead of having them all go in and out at the same place. Here's a ...


11

The water pollution should be easily solved: place your sewage things downstream from the fresh water things, that way they won't take in polluted water. This is the only cause of water pollution that I have come across so far. As to the other pollution there are two types left: noise and ground. One major cause of ground/noise pollution is industry which ...


11

Yes, via mods: ChirpFilter removes non-informative "chirps". ChirpyExterminator deletes Chirpy from the game. Outside of modding, there isn't a way to disable Chirpy via game settings.


11

I recommend the Solar Power Plant due to low upkeep and pollution. However, it really depends on what you mean by "best". The best plant in terms of cost per MW and upkeep per MW is the Fusion Plant. To build it, however, you have to unlock and build several unique buildings. Assuming you want to build something other than the Fusion Plant: In terms of ...


11

Yes, you need both cemeteries and crematoriums, as some citizens will refuse to be cremated. (Source : Cities Skylines guide) For trash this is not necessary, you can suffice with just incinerators as trash doesn't really have an opinion on how it is disposed off. For both it is important to build enough facilities spread out trough the city as they have ...


10

Yup, you can upgrade roads. Just open up the roads menu, and click the "Upgrade Roads" button. It's the one that looks like an exclamation point, and I've circled it in the below image. This will allow you to build over existing roads so they can handle a higher volume of traffic. (image source: http://www.skylineswiki.com/File:Road_construction_1.jpg)


Only top voted, non community-wiki answers of a minimum length are eligible