I've created a dozen cities in Skylines so far, but in my latest city, I've encountered a new problem. A lot of my Commercial buildings report the problem "Not enough goods to sell".
From my understanding, it seems like the Goods in these Commercial buildings are selling out too quickly, and not being replenished fast enough.
Here are the ways in which a Commercial building can replenish goods, and my response to each one, in my particular game:
- Trucks. They bring in goods, via the international highway. My traffic is really good, so this shouldn't be a problem.
- Trains. I've got one train station, since the railway is pretty far out from my city, so I had to extend my city just to reach this one station.
- Ships. I've got four cargo docks, and it still doesn't seem to be enough. Most ships coming in are 100% full. Although I've started to notice a few are less than 50% full, which I thought indicated that my city had more supplies than necessary.
Is there anything else I'm missing? I've also got no Policies enabled regarding Commercial zones.
Edit 1: I have no Industrial zones, because they cause pollution and traffic, and because my citizens are too educated. About 10% are "Uneducated". So most of them work in Offices instead, and I have a ton of them.
I don't think my city has a high demand for Commercial zones, because I currently have a 10x10 Commercial plot that isn't developing. I tend to manage my zones pretty well, I think, meaning I will almost always have one empty lot for each zone type. This allows me to control growth, because if that empty lot does not develop, then that's fine because it is there just in case the demand ever increases for that particular zone type. And if the zone does develop, then I make a new empty lot.
My traffic is flowing quite nicely. It's not all green, but there are definitely no red spots at all; orange, at worst. And lots of highways, which my citizens happily take if they need it, which they use quite frequently. I don't think traffic is a concern; the heart of my city isn't even that far away from my four cargo harbors.