I'm from Canada and we always make way for emergency vehicles, we pull off the side of the road and let them through. This is not simulated in game, i had 3 firetrucks wait in traffic across the street from 3 burning buildings last night, they seem to have to go to the end of the street and turn around and come back. It seems to me this has gotten worse over the last couple of days since the last patch. My cities will burn to the ground tonite. It's pretty much unplayable for me now, before the 1.7 traffic patch it was at least managable.