How to give way to emergency vehicles FIRE / RESCUE / EMS / POLICE

Reacting onto Ambulance / Fire / Police with siren
While emergency vehicles are blocked quite often whileresponding code 3, some motorists watch out for their surrounding traffic situation and react perfectly towards approaching emergency vehicles.
Here's the bright side:people reacting immediately, using their brain to find the best way toclearthe path for an appraoching emergency vehicle, peopl looking into their rear mirrors and spot emergency vehicles even if they are using lights only (without the siren). Some people also cross stopping lines, red traffic lights and carefully proceed into the intersection. Sometimes cars even move over in GTA style: all of them simultaneously.
Sometimes pulling over to the left or keeping on driving is the better option than pulling to the right and stopping.
Here the emergency vehicles canliterally fly through traffic jams and through red light intersections whileall relevant traffic has come to a stop and has pulled over ...isn't that like in a dream world, sth you'd expect but hardlysee in reality?