How people react to emergency vehicles depends on the traffic laws of the state. In Az it's law to pull over and stop to let emergency vehicles by, both ways on non-divided highways. They're serious about it and give tickets. Back in Pa when we left in 2005 it wasn't law and people would slow a bit and move over a little. Maybe the law has changed since then.
To the OP, by all means move to Poland and be happy.