To be a bit clearer;
The change I suggested was not driving the whole way or large distances on the wrong side of the road, because I agree, it is asking for an accident. I was suggesting that for short distances (like the screen shot in my original post where the incident was 20m from the intersection), that the responding emergency vehicles get directed up the opposite side of a street. And I also suggested a 50% reduction in speed if this takes place for realism and safety.
I'm not sure if the navigation system used in game could necessarily calculate this as it finds the shortest route from point A to point B currently following normal traffic laws.
To be able to add in additional routes where breaking the normal traffic laws is permissible for X # of meters would likely require it to recalculate way too many nodes from OSM - effectively slowing down dispatch time.
While I'd love to see it as feasible - I can't see how it would be calculable by the system without a major hit to performance.