Let’s assume we’re not stopped at a traffic signal.
This is only anecdotal, but I heard once that you’re not supposed to stop altogether, rather drive at a slower pace so as to let it pass quickly. The person said what was more important is that drivers don’t make sudden changes to their behavior. An EMT driver can more safely maneuver if they don’t have to predict what any one knucklehead will do the moment they get close.
If this is wrong or needs clarification, please enlighten me!
In Australia some states say you can run a red light, others say you can’t.
That said, in many cases it’s possible to “encroach” into the intersection to allow the vehicle to pass without crossing traffic.
Also note that in the vast majority of cases the emergency vehicle can just go around queued traffic.