Problems with the navigation system have been brought up before in the past, but I think that this is something pretty obvious that could hopefully be fixed and implemented onto other versions.
As an emergency vehicle you are permitted by law to break the road rules in Australia, or at least in Vic. By which I mean drive on the wrong side of the road and in the opposite direction to traffic. So, I think that this is something that emergency vehicles should be able to do. Maybe when driving the wrong way, the vehicle speed could be 50% less? Like in this screenshot, where the incident was a couple of meters up the wrong side of a street but nav made the unit do a blockie. Patients can die because of this sort of stuff! And it would be easier to obtain the 'fast extinguished' award, which is like impossible to complete (missions finished in under 2 min from time of generation).