Despite blaring sirens and an open road, a driver forces a fire truck to wait, excruciatingly, at an otherwise lightly-trafficked intersection. Eventually, a car in an adjacent lane pulls into the intersection simply to give the truck space to maneuver around the obstacle.
In other places (below: Montreal, Canada) fire trucks get to ram even other emergency vehicles out the way; in the UK, however, you may well want to confidently remain an arsehole, as they will fine you if you break the traffic code to make way for emergency vehicles.