Traffic

Traffic is a major factor in city optimization, and is typically only a problem when a big city is highly developed. Traffic is view able in its own filter, and also is a factor in city happiness.

The easiest way to decrease traffic is by upgrading dirt roads to city roads, and from there, more organization is required for further optimization. Expressways, one-ways, and buses are all very important in fully optimizing a city's traffic system.

Tips for Improving Traffic
Building a One-way road, Expressway, Mass Transit Service, and Highway would help improve your city traffic happiness and thus reducing traffic jams. It is not recommended to build a Bus Stop on a bridge, a non-elevated Highway system, and a Train Station at far end of your city.

In the settings you can change the traffic volume in the Other tab. You can choose the traffic volume between 25%, 50%, 75%, 1x, 2x, 4x, 8x, 16x, 32x and 64x.