When I did my efad training the instructor said Orkney is the worst place they go to for public reaction to blue lights/siren...... Basically no reaction!It's a tough tough job. In theory when you are jammed you should turn the siren off but position yourself to be seen and ready to move as soon as the traffic clears.
Bull horns at junctions are one of the best inventions IMO
That was showen straight away during the training with one van in particular not moving out of way at all. When we came to round about and drew up alongside the instructor said to pause alongside. There we were with lights going, sirens sounding and van driver looking straight ahead like we didn't exist. Kinda funny