Are there any mods that fix the nodes the traffic cars follow.
For example in Dolphin Cove in the big curve near the lighthouse the contraflow which should stick on their side (outer circle) just drive into your lane.
I can't tell you why they're doing this. It's extremely nasty and nobody knows how to fix this. This usually happens in sharp corners
The game is called NFS road challenge,so maybe you should anticipate on things like that.
When I found out blowing the horn didn't help I switched of traffic ;).