• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
Every case I've seen of this turned out to be a city design issue rather than a bug. Too much traffic, too many one way streets, narrow corridors between small city centres, that kind of thing.

If you post some screenshots with your traffic filter on, and I gues sthe garbage filter, the gameplay experts here can probably see why this is happening.