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This is from the game Cities: Skylines, which is basically the modern version of the old classic SimCity.

I think it would be good if the title made that clear, and didn't pretend this is some serious simulation. I mean, it's very cool and detailed for a game, but as you can tell from the video, it's far from perfect. It doesn't care about collisions, just about a rough approximation of traffic flow.

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Yup. I'd also like to see a couple other figures alongside traffic flow like, "total square footage of structure", "collision rate", and "number of displaced residents."

Cost might be a good one too.

Cost can be very misleading, since most of the cost of big projects like these tends to be land acquisition.

For example, roads are on average much cheaper than rail lines per lane mile of construction, but lots of roads get built in rural or depopulated areas where land is cheaper, whereas rail tends to be built in denser corridors.

Yeah, I'm sorry the title is a bit misleading, I thought of it mainly as a motivation for a more serious implementation of traffic simulator.

Right from the start it is obvious this "simulation" is not a full realistic one. Behaviour of vehicles and amount of them is not realistic and it is not clear what the score represents.

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