Just been experimenting by blowing my hard earned cash. Late game using bus routes town to town, as the inevitable gridlock occurred thought I might as well get radical before starting a new game.
Routes into town are via large country roads with bus lanes, cars behave properly on these. On reaching town I’ve split the roads into two, one medium street no bus lanes, the other a small street with bus lanes, I haven’t completed the full conversion in town yet so there are still problem areas but…. Playing for an hour (real time), not a single car has turned into or spawned on these narrow bus routes. Could this be a temporary work around the gridlock problem? I know it’s expensive but, if done early game whilst traffic is light and railways profitable it should be a bit cheaper to implement.
Might keep things flowing until traffic lights and one way streets appear.