A mod with the non-trivial name Traffic Manager will allow you to manage traffic in your city. Otherwise, the standard game does not particularly extend to the possibilities of complete control of traffic, offering only the construction of new roads and junctions.

With this mod you can:

Here also:

An incredibly important mod that any Cities: Skylines player should have, because it will not only improve the AI ​​of cars and reduce the number of problems on the road, but will also allow you to independently regulate traffic using any of the methods described above.